Census place · GEOID 0673262 · San Mateo County
South San Francisco, CA ZIP codes
2 ZIP/ZCTAs intersecting this Census place in San Mateo County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place South San Francisco (GEOID 0673262). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 65,036 (2 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of South San Francisco, CA

ZIP/ZCTA overlap with South San Francisco
Population overlap
Share of each ZIP/ZCTA’s population located within South San Francisco, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting South San Francisco
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 94080 | South San Francisco | San Mateo County | 65,036 | $135,966 |
| 94128 | San Francisco | San Mateo County | 0 | — |
USPS associates these ZIPs with South San Francisco
These codes list South San Francisco as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 94083 | South San Francisco | San Mateo County | 994 | — |