1 | P a g e
Public Maps: FAIR MAPS Act Assessment
The following maps were submitted by November 8, 2024 and can be considered during the November 18 public hearing
Under the FAIR MAPS Act, the Foster City is required to follow a ranked list of criteria in their districting process:
• Relatively equal in population size – total deviation is under 10% • Contiguous
• Maintains “communities of interest”
• Easily identifiable and understandable lines, following city, natural, and man-made boundaries
• Compact
As demographers, we can assess all criteria objectively except for “maintaining communities of interest.” This particular criterion is subjective by definition and should be discussed by the public and the City Council to determine how well these maps fulfil this criterion.
Public Map 2
M. Fok
Total Deviation: 27.6%
Date of submission: 11/6/2024
Relatively equal in population size?
Contiguous?
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 259876
“Thought Experiment: 2CM all Lagoon Front Property”
Total Deviation: 2.6%
Date of submission: 10/29/2024
Relatively equal in population size? ✓
Contiguous?
Lines are easy to understand and
identify?
Compact?
2 | P a g e
Districtr ID: 259252
“1.75”
Total Deviation: 3.4%
Date of submission: 10/28/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 259227
“~lives on water/92 everyone has an island”
Total Deviation: 4.1%
Date of submission: 10/28/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
*Water census blocks need to be assigned districts.
3 | P a g e
The following maps were submitted by October 28, 2024 and were be considered during the November 4 public hearing.
Districtr ID: 258150
“AJayG”
Total Deviation: 4.8%
Date of submission: 10/24/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 258168
“SG_district_fostercity”
Total Deviation: 3.6%
Date of submission: 10/24/2024
Relatively equal in population size? ✓
Contiguous? *
Lines are easy to understand and
identify?
✓
Compact? ✓
Notes: *The map can easily be made contiguous if all populated blocks are drawn it/map remains balanced.
4 | P a g e
Districtr ID: 258388
“Balanced Population”
Total Deviation: 6.2%
Date of submission: 10/25/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 258391
Total Deviation: 3.6%
Date of submission: 10/25/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Note: Discussion on travel contiguity is needed.
Districtr ID: 258415
“AL1”
Total Deviation: 14.9%
Date of submission: 10/25/2024
Relatively equal in population size?
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Note: Population must be balanced before considering this map.
5 | P a g e
Districtr ID: 258421
“KeepCityWholeAgain”
Total Deviation: >100%
Date of submission: 10/25/2024
Relatively equal in population size?
Contiguous?
Lines are easy to understand and
identify?
Compact?
Districtr ID: 258425
“FC Plan”
Total Deviation: 15.7%
Date of submission: 10/25/2024
Relatively equal in population size?
Contiguous?
Lines are easy to understand and
identify?
Compact? ✓
Districtr ID: 258471
Total Deviation: 3.4%
Date of submission: 10/25/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Notes: This map appears to sacrifice logical boundary dividers and communities of interest to achieve a 0% total deviation.
6 | P a g e
Districtr ID: 258474
Total Deviation: 3.9%
Date of submission: 10/25/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 258535
“Everyone Owns Lagoon”
Total Deviation: 13.6%
Date of submission: 10/25/2024
Relatively equal in population size?
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Notes: Population needs to be balanced before this map can be considered.
Districtr ID: 258538
“Main Arteries & Functions”
Total Deviation: 9.3%
Date of submission: 10/25/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
7 | P a g e
Districtr ID: 258569
“Shashank’s Plan”
Total Deviation: 4.5%
Date of submission: 10/26/2024
Relatively equal in population size? ✓
Contiguous?
Lines are easy to understand and
identify?
✓
Compact? ✓
Notes: Issues with travel and literal contiguity.
Districtr ID: 258659
“perfect balance (just about)”
Total Deviation: 0.2%
Date of submission: 10/26/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 258701
“Almost Perfectly Balanced”
Total Deviation: 0.2%
Date of submission: 10/27/2024
Relatively equal in population size? ✓
Contiguous? ✓
Lines are easy to understand and
identify?
✓*
Compact? ✓
Notes: *Recommended line cleanup and possible travel contiguity issues.
8 | P a g e
Districtr ID: 258703
Total Deviation: 11.7%
Date of submission: 10/27/2024
Relatively equal in population size?
Contiguous?
Lines are easy to understand and
identify?
✓
Compact? ✓
Districtr ID: 258783
“Cunningham Plan”
Total Deviation: 11.4%
Date of submission: 10/27/2024
Relatively equal in population size?
Contiguous?
Lines are easy to understand and
identify?
✓
Compact? ✓
Public Map 1
Hand-drawn submission
“T. Markiewicz”
Total Deviation: 13.8%
Relatively equal in population size?
Contiguous? ✓
Lines are easy to understand and
identify?
✓
Compact? ✓
Notes: Population must be balanced in order to consider this map.
9 | P a g e
Community of Interest Testimony
“The Original Isles”
ID 258536
Date of submission: 10/25/2024