ZIP code · Cotati · California · United States
ZIP code 94931 — Cotati
ZIP code 94931 serves Cotati, California.
- Postal code
- 94931Single source Value from one source, not cross-checked.
- City
- Cotati
- County
- Sonoma FIPS 06097
- State
- California
- Country
- United States
- Coordinates
- 38.3259, -122.7048 — precision precise (locality)
View on OpenStreetMap - Population
- 9,320 (ZCTA, ACS 5-year)
- Population density
- 1,205 / sq mi
- Land area
- 7.7 sq mi (20 km²) (ZCTA, ACS 5-year)
- Median household income
- $103,105
- Per-capita income
- $55,982
- Median age
- 39.8
- Households
- 4,119
- Housing units
- 4,244
- Median home value
- $788,200
- Median gross rent
- $1,780 / month
- Congressional districts
- CA-4 (also CA-2) (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
Tools: compare 94931 with another ZIP · ZIPs within 25 miles · distance from 94931
Map of ZIP code 94931
Climate — monthly normals
Warmest month Sep (avg high 82°F), coldest Dec (avg low 38°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 58 | 61 | 65 | 68 | 72 | 78 | 81 | 81 | 82 | 76 | 66 | 58 |
| Avg low °F | 39 | 40 | 42 | 44 | 47 | 50 | 52 | 53 | 51 | 48 | 42 | 38 |
| Precip in | 4.8 | 5.2 | 3.3 | 1.7 | 0.9 | 0.3 | 0.0 | 0.1 | 0.1 | 1.3 | 2.7 | 5.2 |
NOAA 1991–2020 climate normals from the nearest station: PETALUMA AP (7.1 mi) · NOAA NCEI
Places in ZIP 94931
- 2 schools
- 1 pharmacies
- 1 supermarkets
- 29 restaurants & cafés
- 4 bars & pubs
- 15 parks
- 4 playgrounds
- 1 gyms & sports centres
- 1 post offices
- 5 places of worship
- 1 banks
- 4 gas stations
- 2 EV charging stations
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page