Residential delivery area · California
ZIP Code 94583: San Ramon, CA
ZIP code 94583 uses the postal name San Ramon, California and lies entirely in Contra Costa County (Census 2020 ZIP-county file). About 40,000 people live there (Census Bureau, ACS 2020-2024), the less populous of San Ramon's 2 residential ZIP codes. Median household income is $184,898 (Census Bureau, ACS 2020-2024). By Census place, its land lies in San Ramon (39%) and Norris Canyon (17%); 44% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- San Ramon · 2 residential ZIPs
- County
- Contra Costa County
- Census places
- San Ramon (39%); Norris Canyon (17%) census-designated place
- Metro area
- San Francisco-Oakland-Fremont, CA
- House district
- CA-10 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 21.2 sq mi · 1,864 people per sq mi
Where is ZIP code 94583?
94583 centers on 37.772°, -121.990° and covers 21.2 square miles of land plus 0.0 of water. It borders 7 ZIP codes: 94526, 94582, 94552, 94507, 94568, 94556, 94595.
The map draws ZIP code areas only. For the streets inside 94583, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 94583 compare with the rest of San Ramon?
| Measure | 94583 | In San Ramon | In Contra Costa County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 39,583 | 2nd of 2 | 12th of 48 | 390th of 1,802 |
| Median household income | $185k | 2nd of 2 | 12th of 41 | 78th of 1,189 |
| Median home value | $1.38M | 2nd of 2 | 13th of 43 | 169th of 1,317 |
Its median household income is higher than in 99% of U.S. residential ZIP codes, and it is denser than 84% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 94583?
The 2020 Census counted 38,444 people in 94583; the ACS, which samples households over 2020-2024, estimates 39,583. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 39,583
- 2020 Census count
- 38,444
- Households
- 13,890
- Median age
- 40.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 94583?
Of the 39,583 people the ACS estimates in 94583, 25.1% are under 18 and 14.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (42.9%), then Asian (not Hispanic) (38.0%).
- Under 1825.1%
- 18 to 6460.5%
- 65 and older14.4%
- White, not Hispanic42.9%
- Asian, not Hispanic38.0%
- Hispanic or Latino10.1%
- Other or two or more7.0%
- Black, not Hispanic2.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 94583 earn?
Median household income is $184,898 (ACS 2020-2024), the 12th highest of the 41 ranked ZIP codes in Contra Costa County.
- Median household income
- $184,898
- Income per person
- $79,629
- Below the poverty line
- 3.6%
- Unemployed (of the labor force)
- 5.4%
- Adults 25+ with a bachelor's degree
- 64.9%
- Adjusted gross income per tax return, 2022
- $273,28620,110 returns; wages 83% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 94583?
FHFA's house price index for 94583, built from repeat sales and appraisals of the same homes, rose 54% from 2015 to 2025 and rose 28% from 2020 to 2025, and moved −6.4% in 2025.
- Median home value (owners' estimate)
- $1,383,600
- Median gross rent
- $3,019
- Homes owned by their occupants
- 72.1%
- Housing units
- 14,345
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 94583?
2,090 business establishments had a location in this ZIP code in 2023, 39 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services407
- Health care and social assistance327
- Finance and insurance208
- Other services (except public administration)168
- Accommodation and food services153
- Administrative and support and waste management and remediation services147
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 94583?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94526 | Danville | 32,584 | $225k | 3.0 mi |
| 94582 | San Ramon | 47,424 | $215k | 4.1 mi |
| 94552 | Castro Valley | 14,506 | $213k | 4.7 mi |
| 94507 | Alamo | 14,586 | $250k+ | 5.8 mi |
| 94568 | Dublin | 70,803 | $214k | 6.2 mi |
| 94556 | Moraga | 15,998 | $216k | 7.6 mi |
| 94595 | Walnut Creek | 16,988 | $101k | 8.2 mi |
| 94528 | Diablo | 1,049 | $208k | 5.1 mi (near) |
| 94506 | Danville | 27,055 | $250k+ | 5.3 mi (near) |
| 94546 | Castro Valley | 44,855 | $128k | 6.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.