2024
Annual Public
Safety Report
City of Diamond Bar
diamondbarca.gov/ltps
City of Diamond Bar - 2024 Public Safety Annual Report |1 City of Diamond Bar
Annual Public Safety Report 2024
Table of Contents
Introduction _________________________________________ 1 Inland Valley Humane Society & S.P.C.A. ____________________________________ 1 Animal Control ___________________________________________________________ 2 Adoptions________________________________________________________________ 2 Licensing_________________________________________________________________ 3 Low-Cost Veterinary Services ______________________________________________ 3 Community Outreach ____________________________________________________ 3 IVHS Statistics – One Year Comparison_______________________________________ 4 Los Angeles County Fire Department ________________________________________ 5 East County Administrative Office _________________________________________ 5 Personnel ________________________________________________________________ 6 Fire Prevention and Preparedness Programs________________________________ 6 Annual Brush Clearance Inspection Program_______________________________ 6 Community Emergency Response Team ___________________________________ 7 Ready, Set, Go!___________________________________________________________ 8 Family Instructions for Rapid Escape (F.I.R.E) ________________________________ 8 Hands-Only CPR __________________________________________________________ 9 Safe Surrender____________________________________________________________ 9 Explorer Program _________________________________________________________ 9 Junior Lifeguard Program ________________________________________________ 10 Water Watcher __________________________________________________________ 10 Sirens of Silence _________________________________________________________ 10 Women’s Fire and Lifeguard Prep Academies _____________________________ 10 Girls’ Fire Camp _________________________________________________________ 11 City of Diamond Bar - 2024 Public Safety Annual Report |2 Fire Department Statistics – One Year Comparison___________________________ 11 Los Angeles County Sheriff’s Department____________________________________ 11 Diamond Bar/Walnut Station _____________________________________________ 12 Expenditures ____________________________________________________________ 12 Law Enforcement Deployment and Volunteers ______________________________ 12 Personnel _______________________________________________________________ 12 Volunteers on Patrol _____________________________________________________ 13 Crime Prevention, Outreach and Advocacy ________________________________ 13 Special Operations ______________________________________________________ 14 Let’s Talk Public Safety Program __________________________________________ 14 Sheriff’s Department Statistics – One Year Comparison_______________________ 16 City of Diamond Bar - 2024 Public Safety Annual Report |1 Introduction
Since incorporation, the City Council has made public safety its top priority, a commitment that has resulted in Diamond Bar’s standing as one of the safest communities in the San Gabriel Valley. This report provides background and analysis of the City’s animal control, fire protection, and law enforcement programs.
Inland Valley Humane Society & S.P.C.A.
The Inland Valley Humane Society &
S.P.C.A. (IVHS) is a nonprofit
organization that provides animal
care and control services under
contract to Diamond Bar and 11 other
cities and unincorporated areas of
San Bernardino County. IVHS
headquarters in Pomona is located
within approximately 1 mile of the
city’s border, offering convenient
access for Diamond Bar pet owners
and rapid response to local
enforcement and nuisanceabatement issues.
The City’s budgeted service contract cost for Fiscal Year 2024-25 is $563,305.
This is offset by licensing and related service fees from gross service costs, bringing the annual total to $465,000 for Fiscal Year 2024-25. Costs vary from year to year based on changes in license fee revenue collected, percentage of IVHS services consumed by residents, and any changes to the City’s animal license fee schedule.
City of Diamond Bar - 2024 Public Safety Annual Report |2 IVHS Objectives
Provide a safe
refuge for all sick,
injured, abused,
and abandoned
animals that have
no other
alternatives.
Foster compassion
for all living things
through education
and outreach.
Promote the health
and wellness of all
pets in our
community by
providing
accessible and
affordable
veterinary care.
Reduce pet
overpopulation.
Animal Control
IVHS animal control officers and personnel enforce the City’s animal-related ordinances, prevent cruelty by advocating and enforcing state animal protection laws, and investigate nuisance animals. They also are tasked with rescuing wild and domestic animals, providing medical care, shelter and food when necessary.
Adoptions
IVHS leads the community in finding homes for
all adoptable pets. In 2015, IVHS launched the
“Getting to Zero” campaign, a robust adoption
outreach plan with the goal of saving every
adoptable pet in their care. The adoption
program features active social media and
internet-based outreach efforts that have
resulted in increased adoptions for the last
several years.
All pets adopted through IVHS are provided with free food through its partnership with Royal Canin, two weeks postadoption veterinary care through its partnership with VCA, and if having behavioral problems IVHS provides scholarship for Good Pups online training. To assist pet owners that must unfortunately relinquish their animal, IVHS offers the “Home-toHome” program, an easy to use direct-to-adopter opportunity that allows animals to be re-homed without having to enter the shelter.
City of Diamond Bar - 2024 Public Safety Annual Report |3 Licensing
IVHS is responsible for issuing dog and cat
licenses and collecting licensing revenue
in the city. Licensing of dogs four months
and older is required by state law. To
better streamline licensing, IVHS partnered with DocuPet for new licenses and renewals.
The DocuPet portal also allows residents to have a simple and nationally recognized website that provides a one-stop shop for licenses and customizable pet tags that can be used to reunify pets with their families.
Low-Cost Veterinary Services
IVHS opened its state-of-the-art Alex and
Elisabeth Lewyt Medical Center in January 2023,
and provides Diamond Bar pet owners the
opportunity for low-cost spay/neuter and
vaccine appointments, and other pet wellness
needs. In addition, all animals are spayed or
neutered, microchipped, de-wormed, and
treated for fleas and ticks before adoption.
To reduce the growing number of cats, chihuahuas, and pit bulls that enter shelters each year, IVHS provides low-cost spay/neuter services under the “Big Meow,” “Chihuahua Challenge,” and “Pit Stop” programs, which are open to Diamond Bar residents at a reduced rate.
Community Outreach
IVHS offers a number of public engagement programs to Diamond Bar residents of all ages, including participation at City special events like the annual Halloween Party, special school presentations, pet therapy visits and facility tours.
City of Diamond Bar - 2024 Public Safety Annual Report |4 IVHS Statistics – One Year Comparison
2024 One-year Comparison – IVHS Animal Care and Control Category 2024 2023 Difference % Change
Total Service Calls 1488 1707 -219 -12.8%
Service Calls - Day 1025 1106 -81 -7.3%
Service Calls - Night 463 601 -138 -23.0%
Service Time – In Hours 860 871 -11 -1.3%
Stray Dogs 87 134 -47 -35.1%
Stray Cats 13 65 -52 -80.0%
Owner Release Dogs 3 0 3 N/A
Owner Release Cats 0 1 -1 -100.0%
Misc. Animals Received 205 153 52 34.0%
Dogs Adopted 46 95 -49 -51.6%
Cats Adopted 23 82 -59 -72.0%
Dogs Euthanized 28 21 7 33.3%
Cats Euthanized 7 21 -14 -66.7%
Misc. Euthanized 45 36 9 25.0%
Stray Dogs - Deceased 20 29 -9 -31.0%
Stray Cats - Deceased 14 27 -13 -48.1%
Bites 17 31 -14 -45.2%
Cruelty 39 26 13 50.0%
Violations 101 117 -16 -13.7%
City of Diamond Bar - 2024 Public Safety Annual Report |5 Los Angeles County Fire Department
The City is served by the Los
Angeles County Fire
Department under the
Consolidated Fire Protection
District. The District, which is
funded through annual
property tax assessment levied
by Los Angeles County,
provides fire protection and
prevention and emergency
medical services to City
residents and business owners.
The District serves 59 of the
County’s 88 cities.
Of the base 1% property tax collected on assessed property values, approximately 17% of those collections are distributed directly to the Fire District to be used consistent with the budget approved by the Los Angeles County board of supervisors.
Fire Stations
Station 119
20480 E. Pathfinder Road
• Engine 119
• Squad 119
Station 120
(Battalion HQ)
1051 S. Grand Ave.
• Engine 120
• Patrol 120
Station 121
346 Armitos Place
• Engine 121
East County Administrative Office
The City is home to the Los Angeles County Fire Department East County Administrative Office (ECAO), which is housed in the former Diamond Bar Library building. ECAO brings many key department personnel to Diamond Bar, including the Assistant Fire Chief, Fire Prevention Captain, inspectors and plan checker, Community Services Liaison, Division Secretary, Nurse Educator, and construction and maintenance staff, providing convenient customer service to residents and businesses.
City of Diamond Bar - 2024 Public Safety Annual Report |6 Personnel
Acting Assistant Fire Chief Dustin Robertson
oversees 18 fire stations, three of which are in
the City of Diamond Bar. Under Chief
Robertson’s direction, six Battalion Chiefs are
assigned and responsible for overseeing
Diamond Bar fire station operations. The
Diamond Bar stations are staffed with 36
firefighters.
Fire Prevention and Preparedness Programs
The Los Angeles County Fire Department remains engaged with the community, promoting fire and emergency preparedness through a number of outreach programs.
Multi Jurisdictional Wildland Fire Preparation (San Bernardino, Orange, Los Angeles, Riverside - SOLAR)
On a quarterly basis, SOLAR fire agencies gather to enhance communication and partnerships in wildfire preparedness in Tonner Canyon. Tonner Canyon is a shared geographical area for the affected fire agencies.
Following the 2008 Freeway Complex Fire, the affected fire agencies met to discuss lessons learned. As a result, they formed a mutual threat working group to address protocols, communication skills, mutual and automatic aid agreements, pre-attack plans and improve unified commands.
Meetings of the SOLAR agencies provide an opportunity to collaborate on a plan of action with numerous incident commanders based on one unified command.
Annual Brush Clearance Inspection
Program
The Brush Clearance Program is a joint effort
between the Fire Department, the County of
Los Angeles Department of Agricultural
Commissioner/Weights and Measures, and the
Weed Abatement Division. The Fire
Department’s Brush Clearance Unit (BCU)
enforces the Fire Code as it relates to brush
clearance on improved parcels.
The BCU works closely with all county fire stations, coordinating inspections, providing training for fire station personnel and to support station compliance efforts. On May 1 of each year, Diamond Bar fire stations begin annual brush clearance (defensible space) inspections, focusing on designated brush areas and high fire severity zones within the city.
City of Diamond Bar - 2024 Public Safety Annual Report |7 Required clearance of non-native vegetation and properly maintained ornamental vegetation is the first line of defense against wildfire.
Conscientious efforts on behalf of the property owner to comply with Fire Department requirements will greatly reduce the chances of fire spreading onto property.
Diamond Bar Stations look forward to working with homeowners to ensure the risk of fire hazard is reduced on their property. The Fire Department’s website fire.lacounty.gov offers additional information and resources regarding annual brush inspections.
Community Emergency Response Team
Following a major disaster, fire and rescue
resources may be unable to immediately
respond to all those in need. In such a crisis, it
will be neighbors assisting neighbors until
emergency response personnel can arrive.
Community Emergency Response Team (CERT)
training provides residents with the skills and
tools necessary to take care of themselves, their
families, neighbors, and co-workers in the event
of a disaster.
The Fire Department offers free, FEMA-approved 20-hour CERT training to the communities served. Classes educate residents on hazards that may impact their area, and basic disaster response skills such as fire safety, light search and rescue, team organization and disaster medical operations.
Upon completion of the course, CERT members are better prepared to assist those in their home, neighborhood or workplace following an event when professional responders are not immediately available to help. It is important to note that CERT volunteers do not work for the Los Angeles County Fire Department.
Ready! Set! Go!
Los Angeles County is one of the most beautiful places to live, but for those living in “wildland urban interface areas,” it does not come without risks. Drought and insect infestation has made fire season year-round and increased the ever-growing number of wildfires.
The Fire Department, along with partnering agencies, stand ready to quickly respond to contain wildfires, utilizing firefighting resources from the air and ground to help protect residents and property from wildfire.
The Ready! Set! Go! Program was created to provide residents with critical information on creating defensible space around the home, retrofitting the home with fire-resistant materials, and preparing residents to safely evacuate well ahead of a wildfire.
City of Diamond Bar - 2024 Public Safety Annual Report |8 Local fire stations encourage Diamond Bar residents living in brush areas and high fire severity zones to be ready and prepared by taking time to review the Ready! Set! Go! Program. To download a copy of the Ready! Set! Go! brochure, residents are encouraged to visit https://fire.lacounty.gov.
Family Instructions for Rapid Escape (F.I.R.E)
Each year in this country, there are thousands of residential fires, some causing serious injuries and/or death. Children are at greatest risk for death or injury in these fires. With recent changes to home construction and furnishings, today’s fires burn hotter, spread faster, and churn out more toxic gases than ever before. In the past, residents had about 17 minutes to escape a house fire once their smoke alarm activated, but today that time has dropped to three minutes or less.
To help address the problem of fatal fires, the Los Angeles County Fire Department, is introducing a unique, new fire safety public education program called Family Instructions for Rapid Escape or F.I.R.E.
The guide provides simple steps on how to make a home “F.I.R.E.” ready, teaching new strategies, so residents can escape and survive if fire strikes. Residents can download a copy of both guides by visiting fire.lacounty.gov. The F.I.R.E. program was researched, developed and written by retired L.A. County Fire Department Captain Brian Cieslak.
Hands-Only CPR
Hands-Only CPR is different from conventional
“mouth-to-mouth” CPR and is designed to teach
people basic CPR skills to aid a family member,
friend or other person in need. If provided
immediately after sudden cardiac arrest, Hands
Only CPR (using chest compression only) can
double or triple a victim’s chance of survival until
emergency responders arrive.
The Fire Department offers Hands Only CPR training to residents during community events and public safety presentations. In addition, Diamond Bar Fire Stations are available to conduct free training during the annual “Sidewalk CPR Day.” “Sidewalk CPR Day” is held during the first week of June and takes place at various sites across the county.
City of Diamond Bar - 2024 Public Safety Annual Report |9 Safe Surrender
The Safely Surrendered Baby Law was created in response to the increasing number of newborn infant deaths due to abandonment in unsafe locations, and signed permanently into state law in January 2006.
The law's intent is to save lives of newborn infants at risk of abandonment by encouraging parents or persons with lawful custody to safely surrender an infant within 72 hours of birth to any fire station or hospital, with no questions asked.
Explorer Program
The Los Angeles County Fire Department Explorer
Program introduces teenagers and young adults to
careers in the fire service. A joint venture with
“Learning for Life”, the Explorer Program was
established in 1975 to develop and foster a relationship between young adults and the communities they live
in.
Explorers value their experiences in this program and many eventually join the ranks of the fire service or pursue leadership roles in other fields. Basic requirements for becoming an Explorer include: 15-20 years of age, maintaining a 2.0 grade point average in school, ability to read, write and comprehend directions and training materials in English, ability to be a team player and submitting a physician-completed medical/physical exam form. Once an Explorer, requirements include attending meetings twice a month, participation in physical activities, and volunteering at community and Department events. Explorers are given the opportunity to participate in a two-day orientation where they learn leadership techniques and soft skills as well as be trained on firefighting skills, hose lay evolutions, ladder techniques, salvage operations, proper use of firefighting tools and equipment, breathing apparatus use, and other related subjects. Upon completion of the Explorer orientation, Explorers may also be eligible to ride-along with fire stations. There are nine Explorer Posts located throughout Los Angeles County with each post representing a Division’s jurisdiction.
Each post is led by a professional firefighter who voluntarily serves as the Explorers’ advisor and mentor.
Junior Lifeguard Program
The Junior Lifeguard program is open to children
between the ages of 9 and 17, teaching participants
about beach and ocean skills such as water safety,
physical conditioning, first aid, rescue techniques, CPR, and more.
City of Diamond Bar - 2024 Public Safety Annual Report |10 Water Watcher
In an effort to help prevent childhood drownings, the Fire Department created the Water Watcher program. A Water Watcher is a responsible adult designated to supervise children when in or near a backyard pool or other body of water. The Department provides interested families with Water Watcher cards that are worn by the adults who commit to remaining free of distractions in order to keep their attention on the water.
Sirens of Silence
The Sirens of Silence aims to familiarize and expose individuals with ASD to first responders. The program works with local organizations so children with ASD and their parents/caregivers can meet firefighters and lifeguards, see and touch the equipment and apparatus in a quiet, less stimulating setting.
Women’s Fire and Lifeguard Prep Academies
The Women’s Fire Prep Academy (WFPA) and
Women’s Lifeguard Prep Academy (WLPA) were
developed in collaboration with the Los Angeles
County Women’s Fire League. The respective
academies expose interested candidates to the duties
and responsibilities of the firefighter and ocean
lifeguard positions.
Girls’ Fire Camp
This one-day camp introduces girls between the ages of 14 and 19 to the career opportunities of the Department and gain some hands-on experience.
City of Diamond Bar - 2024 Public Safety Annual Report |11 Fire Department Statistics – One Year
Comparison
2024 One-year Comparison – LA County Fire
Category 2024 2023 Difference % Change
Total Incidents 3693 3618 76 2.1%
Fire/Explosion 53 41 12 29.3%
Rescue/EMS 2638 2633 5 0.2%
Overpressure/Rupture/
Explosion/Overheat
1 0 1 N/A
Hazardous Condition 15 8 7 87.5%
Service Call 67 55 12 21.8%
Good Intent Call 835 650 185 28.5%
False Alarm/False Call 73 81 -8 -9.9%
Special or Other Incident 10 150 -140 -93.3%
**NOTE: The Los Angeles County Fire Department recently modified statistical reporting categories. These changes are responsible for the significant year-over-year differences in some categories.
Los Angeles County Sheriff’s Department
Diamond Bar’s law enforcement services
are provided by the Los Angeles County
Sheriff’s Department under the Municipal
Law Enforcement Service Agreement
(MLESA) with the County of Los Angeles.
The “contract law” model was dates back
to 1954, when Lakewood became the first
City to partner with the Sheriff’s
Department.
Using this initial agreement as a template, 42 of the County’s 88 cities followed suit and joined the Contract Law Enforcement Program.
The Contract Law Enforcement Program allows cities like Diamond Bar to develop a customized policing program at a more cost-effective rate when compared to a municipal department. The contract law model provides Diamond Bar with access to City of Diamond Bar - 2024 Public Safety Annual Report |12 the full resources of the Sheriff’s Department, including, but not limited to Aero Bureau, narcotics, and the major crimes task force.
Diamond Bar/Walnut Station
The Diamond Bar law enforcement team is based in the Diamond Bar/Walnut Sheriff’s Station, located at 21695 Valley Boulevard in nearby Walnut and can be reached by phone at 909-595-2264.
Expenditures
The City’s contract law expenses comprised of the per-unit cost for each deputy plus a percentage-based fee known as the Liability Trust Fund (LTF). The LTF is a Countycontrolled surcharge applied to fund liability-related issues resulting from the delivery of law enforcement services to contract cities. The FY 2024-25 LTF is 12%. All contract cities pay the same rate.
The City’s base contract law personnel cost for FY 24-25 is approximately $8.2 million.
This total represents more than 25% of General Fund expenditures.
Since FY 2020-21, budgeted contract law personnel costs have increased by an average of 2.91% annually. Annual increases are due to factors including labor contract increases and LTF rates.
Law Enforcement Deployment and Volunteers
Personnel
Captain Steve Tousey leads Diamond
Bar/Walnut Station, providing direct day-today coordination with Diamond Bar staff on law enforcement and crime prevention
matters. Lieutenant Daniel Dail serves as
Diamond Bar’s Service Area Lieutenant.
The City’s FY 2024-25 contract law personnel
deployment is one 40-hour deputy, ten 56-
hour deputies, five 40-hour no-relief deputy
(special assignment team), and one
community services assistant (with vehicle).
The City’s contract law rates are all-inclusive, meaning that the City is not charged for the complement of command, detective, and administrative staff including the Captain, Service Area Lieutenant, Detective Bureau, and other support personnel, City of Diamond Bar - 2024 Public Safety Annual Report |13 facilities, equipment, or emergency deployments in response to an emergency or disaster.
The City’s patrol deputies are assigned to one of three shifts, with personnel levels ranging from three to eight deputies per shift. Personnel levels are adjusted by the station captain based on trends and operations and may be supplemented on any shift by additional personnel, including the Special Assignment Team.
The Special Assignment Team (made up of 40-Hour
Deputy, No Relief positions) is a community policing
program designed to provide maximum flexibility
and responsiveness. In addition to conducting
suppression patrols, traffic enforcement, and
special investigations targeting specific crime
trends, these deputies work directly with residents,
businesses, and schools to provide a consistent
customer service presence from law enforcement.
They also provide additional specialized traffic enforcement, lead Neighborhood Watch, represent the Department at public meetings and events, and handle community relations.
Volunteers on Patrol
Diamond Bar Volunteers on Patrol (VOPs) play a
key role in the City’s public safety program,
performing non-hazardous duties such as
residential vacation checks, park safety checks,
traffic control operations, and directed patrol
assignments. The City Council honors Diamond
Bar VOPs at an annual holiday appreciation
dinner.
Seventeen Diamond Bar VOPs provided 5,975 volunteer hours, providing approximately $200,103 in value to the community.
Crime Prevention, Outreach and Advocacy
In addition to daily patrols, the City uses a diverse array of supplemental techniques to prevent and reduce crime and develop partnerships in the community.
Special Operations
In addition to the funding of regular law enforcement personnel, the annual municipal budget includes appropriations for as-needed special operations outside the scope of daily patrols.
City of Diamond Bar - 2024 Public Safety Annual Report |14 Multiple special operations were conducted in 2024, focusing primarily on burglary suppression.
Suppression operations included expanded patrol units, undercover personnel and vehicles, and targeted surveillance, with allocated resources fully dedicated for the specific task.
Supplemental undercover operations are funded with additional City Council budget appropriations outside annual personnel contract costs.
Flock Safety Automatic License Plate Reader
Cameras
At the City Council’s direction, 50 Flock Safety
automated license plate reader (ALPR) cameras
were deployed throughout the city, primarily on
arterial and collector streets at ingress and
egress points. These cameras capture license
plate data and vehicle make, model, color, and
special features like roof racks and/or stickers.
This data is searchable and is cross-checked with state vehicle databases so that deputies in the field can receive real-time push notifications when a stolen vehicle or driver with an outstanding warrant passes by a camera. The data collected by the cameras also serves as an investigative tool when supplemented by witness accounts.
Let’s Talk Public Safety Program
Created by the City in partnership with the Los Angeles County Sheriff’s Department and Los Angeles County Fire Department, the Let’s Talk Public Safety (LTPS) program is aimed at engaging with the community and raising awareness about everything public-safety related, from emergency preparedness to crime prevention.
Neighborhood Watch
The Diamond Bar Neighborhood Watch
program is a partnership between the City’s
Public Safety Team and the community.
Neighborhood Watch groups actively
participate in preventing criminal activity before
it starts and assist law enforcement in developing
solutions to local issues.
Participants are called upon to reach out to their neighbors to organize groups united to prevent crime. Established groups become the additional “eyes and ears” necessary to keep their neighborhoods safe. Neighborhood leaders, or “Block Captains” serve as City of Diamond Bar - 2024 Public Safety Annual Report |15 the primary liaison between the neighborhood and law enforcement, distributing information and coordinating meetings. For security reasons, the identities and locations of Block Captains are not revealed to the public.
Neighborhoods with active groups feature City-provided Neighborhood Watch signage. Neighborhood Watch groups generally meet in the evenings or on weekends in a small group setting, usually hosted by the neighborhood Block Captain.
The meetings feature an interactive presentation with the audio/visual capabilities of the City’s portable Neighborhood Watch trailer. Topics of discussion include, but are not limited to crime prevention and burglary suppression, home safety and security, emergency preparedness, reporting suspicious activity.
There are approximately 100 known Neighborhood Watch groups.
Coffee with a Cop
Coffee with a Cop meetings offer informal,
conversational dialogue with residents and deputies
with crime prevention tips and Q&A opportunities.
Meetings follow a drop-in format, and are held twice
a month at different locations around town.
Registration is not required.
Safety Speak Blog
The Safety Speak blog is a monthly message posted to the City website, emailed to residents who subscribe to the blog, and shared on social media platforms. Using a friendly, conversational tone, Safety Speak provides readers with crime prevention information on a variety of topics. In 2024, featured topics included Super Bowl Sunday and DUIs, Victim of Crime Abroad, Active Attacker Response – Run, Hide, Fight, Local Homelessness Response/Letter of Agency, and Youth Opioid Use Prevention. The blog also features an “Ask a Deputy” feature, which provides a forum for residents to receive answers to specific questions not otherwise covered in a blog post.
Public Safety Tip Sheets
The City website also features a library of branded LTPS public safety tip sheets and videos, providing easy-to-understand information on a variety of topics.
City of Diamond Bar - 2024 Public Safety Annual Report |16 Report for Reward
The Report for Reward program encourages residents to
come forward with information that leads to the arrest of burglary and larceny suspects. Under the program, residents are eligible for a reward of up to $500 for information that leads to the arrest of burglary suspects. Since implementation in 2014, 15 individuals have received a reward for their assistance in identifying and reporting burglary suspects in Diamond Bar.
Sheriff’s Department Statistics – One Year Comparison
Year-to-Year Comparison – Total Part 1 Crime
Category 2024 2023 Difference % Change
Total Part 1 Crime 993** 1071 -78 -7.3%
**15th lowest total in City history
Year-to-year Comparison – Part 1 Violent Crime
Category 2024 2023 Difference % Change
Total Violent Crime 39** 68 -29 -42.6%
Homicide 1 2 -1 -50%
Rape 5 8 -3 -37.5%
Robbery 11 21 -10 -47.6%
Aggravated Assault 22 37 -15 -40.5%
**Lowest total in City history
Year-to-Year Comparison – Part 1 Property Crime
Category 2024 2023 Difference % Change
Total Property Crime 954** 1003 -49 -4.9%
Burglary 343 287 56 19.5%
Larceny Theft 535 610 -75 -12.3%
Grand Theft Auto 74 105 -31 -29.5%
Arson 2 1 1 100%
**20th lowest total in City history
City of Diamond Bar - 2024 Public Safety Annual Report |17
Year-to-Year Comparison – Calls for Service
Category 2024 2023 Difference % Change
Total Calls for Service 9399 10018 -619 -6.2%
Emergency 500 537 -37 -6.9%
Priority 1268 1372 -104 -7.6%
Routine 7631 8109 -478 -5.9%
Year-to-Year Comparison – Response Times
Category 2024 2023 Difference % Change
Emergency 4.9 4.5 0.4 8.9%
Priority 9.6 9.3 0.3 3.2%
Routine 29 26.9 2.1 7.8%
Year-to-Year Comparison – Arrests
Category 2024 2023 Difference % Change
Total Arrests 331 392 -61 -15.6%
Arrests – Part 1 70 69 1 1.4%
Arrests – Part 2 261 323 -62 -19.2%
2024 vs. Five-Year Average Comparison – Total Part 1 Crime Category 2024 Five-Year Average % Change
Total Part 1 Crime 993 991.6 0.1%
2024 vs. Five-Year Average Comparison – Part 1 Violent Crime Category 2024 Five-year Average % Change
Total Violent Crime 39 64.8 -39.8%
Homicide 1 1 0%
Rape 5 8 -37.5%
Robbery 11 18.4 -40.2%
Aggravated Assault 22 37.4 -41.2%
City of Diamond Bar - 2024 Public Safety Annual Report |18 2024 vs. Five-Year Average Comparison – Part 1 Property Crime Category 2024 Five-Year Average % Change
Total Property Crime 954 928 2.8%
Burglary 343 268.6 27.7%
Larceny Theft 535 565 -5.3%
Grand Theft Auto 74 92.2 -19.7
Arson 2 2.2 -9.1%
2024 vs. Five-Year Average Comparison – Calls for Service Category 2024 Five-Year Average % Change
Total Calls for Service 9399 9684.8 -3%
Emergency 500 558.8 -11.8%
Priority 1268 1475.8 -16.4%
Routine 7631 7650.2 -0.3%
2024 vs. Five-year Average Comparison – Response Times
Category 2024 Five-Year Average % Change
Emergency 4.9 4.6 6.1%
Priority 9.6 8.76 8.7%
Routine 29 25.88 10.8%
2024 vs. Five-Year Average Comparison – Arrests
Category 2024 Five-Year Average % Change
Total Arrests 331 433 -30.8%
Arrests – Part 1 70 73 -4.3%
Arrests – Part 2 261 360 -37.9%
2024 vs. Five-Year Median Comparison – Total Part 1 Crime Category 2024 Five-Year Median % Change
Total Part 1 Crime 993 993 0%
City of Diamond Bar - 2024 Public Safety Annual Report |19 2024 vs. Five-Year Median Comparison – Part 1 Violent Crime Category 2024 Five-Year Median % Change
Total Violent Crime 39 63 -38.1%
Homicide 1 1 0
Rape 5 7 -28.6%
Robbery 11 18 -38.9%
Aggravated Assault 22 37 -40.5%
2024 vs. Five-Year Median Comparison – Part 1 Property Crime Category 2024 Five-Year Median % Change
Total Property Crime 954 954 0%
Burglary 343 256 34.0%
Larceny Theft 535 594 -9.9%
Grand Theft Auto 74 98 -24.5%
Arson 2 2 0%
2024 vs. Five-year Median Comparison – Calls for Service Category 2024 Five-year Median % Change
Total Calls for Service 9399 9892 -5%
Emergency 500 537 -6.9%
Priority 1268 1439 -11.9%
Routine 7631 7631 0%
2024 vs. Five-Year Median Comparison – Response Times
Category 2024 Five-Year Median % Change
Emergency 4.9 4.5 8.9%
Priority 9.6 9.1 5.5%
Routine 29 26.9 7.8%
City of Diamond Bar - 2024 Public Safety Annual Report |20 2024 vs. Five-Year Median Comparison – Arrests
Category 2024 Five-Year Median % Change
Total Arrests 331 437 -24.3%
Arrests – Part 1 70 70 0%
Arrests – Part 2 261 374 -30.2%
2024 vs. Historical Average Comparison – Total Part 1 Crime Category 2024 Historical Average % Change
Total Part 1 Crime 993 1146.17 -13.4%
2024 vs. Historical Average Comparison – Part 1 Violent Crime Category 2024 Historical Avg. % Change
Total Violent Crime 39 124.46 -68.7%
Homicide 1 1.17 -14.5%
Rape 5 5.71 -12.4%
Robbery 11 40.51 -72.8%
Aggravated Assault 22 77.06 -71.5%
2024 vs. Historical Average Comparison – Part 1 Property Crime Category 2024 Historical Avg. % Change
Total Property Crime 954 1021.89 -6.6%
Burglary 343 304.66 12.6%
Larceny Theft 535 560.71 -4.6%
Grand Theft Auto 74 151.91 -51.3%
Arson 2 5.119 -61.5%
**20th lowest total in City history
City of Diamond Bar - 2024 Public Safety Annual Report |21 2024 vs. Historical Average Comparison – Calls for Service Category 2024 Historical Average % Change
Total Calls for Service 9399 11579.71 -18.8%
Emergency 500 328.56 52.2%
Priority 1268 1887.78 -32.8%
Routine 7631 9295.22 -17.9%
2024 vs. Historical Average Comparison – Response Times Category 2024 Historical Average % Change
Emergency 4.9 4.7 4.6%
Priority 9.6 8.1 18.5%
Routine 29 23.7 22.3%
2024 vs. Historical Average Comparison – Arrests
Category 2024 Historical Average % Change
Total Arrests 331 582.6 -43.2%
Arrests – Part 1 70 106.55 -34.3%
Arrests – Part 2 261 468.38 -44.3%
2024 vs. Historical Median Comparison – Total Part 1 Crime Category 2024 Historical Median % Change
Total Part 1 Crime 993 1004 -1.1%
2024 vs. Historical Median Comparison – Part 1 Violent Crime Category 2024 Historical Median % Change
Total Violent Crime 39 92 -57.6%
Homicide 1 1 0%
Rape 5 5 0%
Robbery 11 31 -64.5%
Aggravated Assault 22 54 -59.3%
City of Diamond Bar - 2024 Public Safety Annual Report |22 2024 vs. Historical Median Comparison – Part 1 Property Crime Category 2024 Historical Median % Change
Total Property Crime 954 941 1.4%
Burglary 343 282 21.6%
Larceny Theft 535 535 0%
Grand Theft Auto 74 105 -29.5%
Arson 2 4 -50%
2024 vs. Historical Median Comparison – Calls for Service Category 2024 Historical Median % Change
Total Calls for Service 9399 11134 -15.6%
Emergency 500 275.5 81.5%
Priority 1268 1815.5 -30.2%
Routine 7631 8980.5 -15%
2024 vs. Historical Median Comparison – Response Times
Category 2024 Historical Median % Change
Emergency 4.9 4.68 4.7%
Priority 9.6 7.91 21.4%
Routine 29 23.85 21.6%
2024 vs. Historical Median Comparison – Arrests
Category 2024 Historical Median % Change
Total Arrests 331 571 -42%
Arrests – Part 1 70 101 -30.7%
Arrests – Part 2 261 481 -45.7%
City of Diamond Bar - 2024 Public Safety Annual Report |23 2024 vs. Historical Median Comparison – Traffic
Category 2024 2023 Difference % Change
Total Collisions 434 479 -45 -9.4%
Involving Fatality 3 4 -1 -25%
Involving Injury 114 139 -25 -18%
DUI Collisions 7 6 1 16.7%
DUI Arrests 19 30 -11 -36.7%
Total Citations 1044 1265 -221 -17.5%
Hazardous Citations 829 1024 -195 -19%
Non-Hazardous Citations 215 241 -26 -10.8%
Parking Citations 4191 3318 873 26.3%