94931 vs 94951 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 94931, Orange = ZIP 94951.
Quick verdict: ZIP 94931 is more affordable rent, lower poverty rate, lower unemployment, more diverse. ZIP 94951 is wealthier, higher home values, more educated, higher work-from-home share.
Quick Facts
ZIP 94931
Cotati city, CA
View full profile →- Population9,320
- Median Income$103,105
- Median Home Value$788k
- Median Rent$1,696
- Median Age39.8 yrs
- Poverty Rate7.6%
ZIP 94951
Penngrove CDP, CA
View full profile →- Population3,628
- Median Income$116,093
- Median Home Value$1213k
- Median Rent$1,996
- Median Age45.8 yrs
- Poverty Rate7.9%
Visual comparison (same scale)
Population
9,3203,628
Median Income
$103,105$116,093
Median Home Value
$788k$1213k
Median Rent
$1,696$1,996
Median Age
39.8 yrs45.8 yrs
Poverty Rate
7.6%7.9%
Demographics
ZIP 94931
Cotati city, CA
View full profile →- White %73.9%
- Black %1.5%
- Asian %2.2%
- Hispanic %19.2%
- Age 0–17 %17.5%
- Age 18–64 %64.7%
- Age 65+ %17.8%
- Bachelor's+ %39.0%
- Diversity Index42/100
ZIP 94951
Penngrove CDP, CA
View full profile →- White %79.4%
- Black %0.0%
- Asian %1.0%
- Hispanic %36.4%
- Age 0–17 %25.9%
- Age 18–64 %50.7%
- Age 65+ %23.4%
- Bachelor's+ %44.0%
- Diversity Index24/100
Visual comparison (same scale)
White %
73.9%79.4%
Black %
1.5%0.0%
Asian %
2.2%1.0%
Hispanic %
19.2%36.4%
Age 0–17 %
17.5%25.9%
Age 18–64 %
64.7%50.7%
Age 65+ %
17.8%23.4%
Bachelor's+ %
39.0%44.0%
Diversity Index
42/10024/100
Economy
ZIP 94931
Cotati city, CA
View full profile →- Median Income$103,105
- Unemployment %3.2%
- IRS Net Migration+459
- Work From Home %16.1%
ZIP 94951
Penngrove CDP, CA
View full profile →- Median Income$116,093
- Unemployment %4.5%
- IRS Net Migration+179
- Work From Home %20.1%
Visual comparison (same scale)
Median Income
$103,105$116,093
Unemployment %
3.2%4.5%
IRS Net Migration
+459+179
Work From Home %
16.1%20.1%
Housing
ZIP 94931
Cotati city, CA
View full profile →- Median Home Value$788k
- Median Rent$1,696
- Owner Occupied %60.2%
- Broadband %95.7%
- Vacant %3.0%
- Median Year Built1983
ZIP 94951
Penngrove CDP, CA
View full profile →- Median Home Value$1213k
- Median Rent$1,996
- Owner Occupied %66.5%
- Broadband %93.7%
- Vacant %5.3%
- Median Year Built1973
Visual comparison (same scale)
Median Home Value
$788k$1213k
Median Rent
$1,696$1,996
Owner Occupied %
60.2%66.5%
Broadband %
95.7%93.7%
Vacant %
3.0%5.3%
Median Year Built
19831973
Climate & Location
ZIP 94931
Cotati city, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)20 ft
- Nearest Airport13.7 miles (22.1 km)
- Distance to Coast10.9 miles (17.6 km)
ZIP 94951
Penngrove CDP, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)20 ft
- Nearest Airport15.8 miles (25.5 km)
- Distance to Coast8.3 miles (13.4 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
20 ft20 ft
Nearest Airport
13.7 miles (22.1 km)15.8 miles (25.5 km)
Distance to Coast
10.9 miles (17.6 km)8.3 miles (13.4 km)
Infrastructure
ZIP 94931
Cotati city, CA
View full profile →- Work From Home %16.1%
- Walkability (0–100)66
- Broadband %95.7%
ZIP 94951
Penngrove CDP, CA
View full profile →- Work From Home %20.1%
- Walkability (0–100)57
- Broadband %93.7%
Visual comparison (same scale)
Work From Home %
16.1%20.1%
Walkability (0–100)
6657
Broadband %
95.7%93.7%
Frequently Asked Questions
How do ZIP 94931 and 94951 compare?
ZIP 94931 is more affordable rent, lower poverty rate, lower unemployment, more diverse. ZIP 94951 is wealthier, higher home values, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (94931), orange the second (94951). The same colors are used in the map markers and comparison bars.
Where does this data come from?
Data is from the U.S. Census Bureau and other federal sources. See our Methodology page for details.
How can I compare other ZIP codes?
From any ZIP page, use the "Compare with Another ZIP" tool, or go to /compare/XXXXX-vs-YYYYY (replace with two 5-digit ZIP codes).
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