ZIP code · San Ramon · California · United States
ZIP code 94583 — San Ramon
ZIP code 94583 serves San Ramon, California.
- Postal code
- 94583Single source Value from one source, not cross-checked.
- City
- San Ramon
- County
- Contra Costa FIPS 06013
- State
- California
- Country
- United States
- Coordinates
- 37.7562, -121.9522 — precision precise (locality)
View on OpenStreetMap - Population
- 39,418 (ZCTA, ACS 5-year)
- Population density
- 1,856 / sq mi
- Land area
- 21.2 sq mi (55 km²) (ZCTA, ACS 5-year)
- Median household income
- $184,033
- Per-capita income
- $76,332
- Median age
- 40.6
- Households
- 13,776
- Housing units
- 14,208
- Median home value
- $1,234,400
- Median gross rent
- $2,973 / month
- Congressional district
- CA-10 (119th Congress)
- USDA hardiness zone
- 9b (25 to 30 °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)
- Area code
- 925 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 94583 with another ZIP · ZIPs within 25 miles · distance from 94583
Map of ZIP code 94583
Climate — monthly normals
Warmest month Aug (avg high 83°F), coldest Dec (avg low 41°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 54 | 55 | 58 | 62 | 68 | 76 | 83 | 83 | 80 | 72 | 60 | 53 |
| Avg low °F | 42 | 42 | 43 | 44 | 49 | 55 | 62 | 61 | 60 | 54 | 46 | 41 |
| Precip in | 5.1 | 4.9 | 3.7 | 1.9 | 1.1 | 0.3 | 0.0 | 0.0 | 0.1 | 1.2 | 2.6 | 5.1 |
NOAA 1991–2020 climate normals from the nearest station: MT DIABLO JUNCTION (8.6 mi) · NOAA NCEI
Places in ZIP 94583
- 18 schools
- 9 hospitals & clinics
- 32 doctors & dentists
- 4 pharmacies
- 9 supermarkets
- 116 restaurants & cafés
- 2 bars & pubs
- 18 parks
- 39 playgrounds
- 23 gyms & sports centres
- 1 libraries
- 5 post offices
- 14 places of worship
- 15 banks
- 14 gas stations
- 11 EV charging stations
- 5 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