Residential delivery area · California
ZIP Code 94903: San Rafael, CA
ZIP code 94903 uses the postal name San Rafael, California and lies entirely in Marin County (Census 2020 ZIP-county file). About 31,000 people live there (Census Bureau, ACS 2020-2024), the less populous of San Rafael's 2 residential ZIP codes. Median household income is $142,083 (Census Bureau, ACS 2020-2024). By Census place, its land lies in San Rafael (32%), Lucas Valley-Marinwood (29%) and Santa Venetia (11%); 28% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- San Rafael · 2 residential ZIPs
- County
- Marin County
- Census places
- San Rafael (32%); Lucas Valley-Marinwood (29%) census-designated place; Santa Venetia (11%) census-designated place
- Neighborhoods
- Cerro, Gallinas, Las Gallinas, Terra Linda GeoNames
- Metro area
- San Francisco-Oakland-Fremont, CA
- House district
- CA-2 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 19.9 sq mi · 1,540 people per sq mi
Where is ZIP code 94903?
94903 centers on 38.022°, -122.559° and covers 19.9 square miles of land plus 0.7 of water. It borders 6 ZIP codes: 94960, 94949, 94901, 94930, 94947, 94946.
The map draws ZIP code areas only. For the streets inside 94903, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 94903 compare with the rest of San Rafael?
| Measure | 94903 | In San Rafael | In Marin County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 30,615 | 2nd of 2 | 4th of 29 | 597th of 1,802 |
| Median household income | $142k | 1st of 2 | 9th of 15 | 199th of 1,189 |
| Median home value | $1.2M | 2nd of 2 | 13th of 20 | 234th of 1,317 |
Its median household income is higher than in 95% of U.S. residential ZIP codes, and it is denser than 82% 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 94903?
The 2020 Census counted 30,514 people in 94903; the ACS, which samples households over 2020-2024, estimates 30,615. Between the 2010 and 2020 censuses its population grew 5.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 30,615
- 2020 Census count
- 30,514+5.1% since 2010 (29,040)
- Households
- 12,013
- Median age
- 49.5
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 94903?
Of the 30,615 people the ACS estimates in 94903, 16.2% are under 18 and 26.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (64.8%), then Hispanic or Latino (19.4%).
- Under 1816.2%
- 18 to 6457.7%
- 65 and older26.0%
- White, not Hispanic64.8%
- Hispanic or Latino19.4%
- Other or two or more6.2%
- Asian, not Hispanic5.8%
- Black, not Hispanic3.7%
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 94903 earn?
Median household income is $142,083 (ACS 2020-2024), the 9th highest of the 15 ranked ZIP codes in Marin County. It is not measurably different from 2015-2019 ($129,795 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $142,083±$17,444
- Income per person
- $77,317
- Below the poverty line
- 6.9%
- Unemployed (of the labor force)
- 6.3%
- Adults 25+ with a bachelor's degree
- 55.5%
- Adjusted gross income per tax return, 2022
- $172,98514,620 returns; wages 57% 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 94903?
FHFA's house price index for 94903, built from repeat sales and appraisals of the same homes, rose 46% from 2015 to 2025 and rose 21% from 2020 to 2025, and moved −2.7% in 2025.
- Median home value (owners' estimate)
- $1,197,300
- Median gross rent
- $2,993
- Homes owned by their occupants
- 65.8%
- Housing units
- 12,665
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 94903?
1,144 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance224
- Professional, scientific, and technical services202
- Construction139
- Finance and insurance83
- Other services (except public administration)80
- Administrative and support and waste management and remediation services71
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 94903?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94960 | San Anselmo | 16,232 | $185k | 2.0 mi |
| 94949 | Novato | 17,787 | $121k | 3.9 mi |
| 94901 | San Rafael | 41,307 | $115k | 4.3 mi |
| 94930 | Fairfax | 8,406 | $145k | 4.7 mi |
| 94947 | Novato | 24,100 | $129k | 6.8 mi |
| 94946 | Nicasio | 715 | $155k | 8.3 mi |
| 94957 | Ross | 2,321 | $250k+ | 4.1 mi (near) |
| 94973 | Woodacre | 1,689 | $231k | 4.4 mi (near) |
| 94904 | Greenbrae | 12,815 | $169k | 5.2 mi (near) |
| 94963 | San Geronimo | 739 | $211k | 5.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.