Residential delivery area · California
ZIP Code 94964: San Quentin, CA
ZIP code 94964 uses the postal name San Quentin, California and lies entirely in Marin County (Census 2020 ZIP-county file). About 2,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $115,192 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- ZBP2023
- Town
- San Quentin · its only residential ZIP
- County
- Marin County
- Metro area
- San Francisco-Oakland-Fremont, CA
- House district
- CA-2 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 0.5 sq mi · 5,140 people per sq mi
- PO Box ZIPs
- 94974 also use the name San Quentin
Where is ZIP code 94964?
94964 centers on 37.941°, -122.491° and covers 0.5 square miles of land plus 0.4 of water. It borders 2 ZIP codes: 94939, 94901.
The map draws ZIP code areas only. For the streets inside 94964, 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 94964 compare with the rest of Marin County?
| Measure | 94964 | In Marin County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 2,344 | 15th of 29 | 1,264th of 1,802 |
| Median household income | $115k | not ranked | not ranked |
| Median home value | – | not ranked | not ranked |
94964's income and home value are not ranked: most of its 2,344 residents live outside households (204 households): a campus, a base or an institution. Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 94% of 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 94964?
The 2020 Census counted 4,264 people in 94964; the ACS, which samples households over 2020-2024, estimates 2,344. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 2,344±383 (90% margin)
- 2020 Census count
- 4,264
- Households
- 204
- Median age
- 49.2
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 94964?
Of the 2,344 people the ACS estimates in 94964, 3.6% are under 18 and 24.1% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (34.9%), then White (not Hispanic) (30.9%).
- Under 183.6%
- 18 to 6472.3%
- 65 and older24.1%
- Hispanic or Latino34.9%
- White, not Hispanic30.9%
- Black, not Hispanic22.5%
- Other or two or more6.2%
- Asian, not Hispanic5.5%
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 94964 earn?
Median household income is $115,192 (ACS 2020-2024).
- Median household income
- $115,192±$55,895
- Income per person
- $14,731
- Below the poverty line
- 18.3%
- Unemployed (of the labor force)
- 0.0%
- Adults 25+ with a bachelor's degree
- 7.0%
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 94964?
- Median home value (owners' estimate)
- –
- Median gross rent
- –
- Homes owned by their occupants
- 44.6%
- Housing units
- 244
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 94964?
6 business establishments had a location in this ZIP code in 2023, 5 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance3
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 94964?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94939 | Larkspur | 7,315 | $204k | 2.5 mi |
| 94901 | San Rafael | 41,307 | $115k | 2.8 mi |
| 94925 | Corte Madera | 10,077 | $233k | 1.1 mi (near) |
| 94904 | Greenbrae | 12,815 | $169k | 3.4 mi (near) |
| 94920 | Belvedere Tiburon | 12,609 | $246k | 4.0 mi (near) |
| 94957 | Ross | 2,321 | $250k+ | 4.2 mi (near) |
| 94801 | Richmond | 33,591 | $82k | 5.1 mi (near) |
| 94941 | Mill Valley | 32,706 | $210k | 6.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name San Quentin?
1 more ZIP code carries the postal name San Quentin, CA without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 94974 | Marin County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.