Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/CA/SOUTH-SAN-FRANCISCO

South San Francisco ZIP codes, California

South San Francisco, CA has 2 ZIP codes (94080 and 94083) and area code 650. The largest is 94080.

USPS city name
2 ZIP codes
Overlapping the city
2 more
Population
64,305
Area code
650

Mail addressed to South San Francisco uses the ZIP codes above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

South San Francisco in numbers

About 64,305 people live in South San Francisco, in 21,838 households. The median household income is $136,578 a year, 38% above the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $1,188,800 (62% above the California median), and median gross rent is $2,802 a month. The median age is 43.2; 40.8% of adults 25 and over hold a bachelor's degree or higher (37.1% across California); the average commute takes 26 minutes.

Population64,305South San Francisco64,305
Households21,838South San Francisco21,838
Median age43.2South San Francisco43.2California37.9US 38.9
Median household income$136,578South San Francisco$136,578California$99,122US $80,734
Median home value$1,188,800South San Francisco$1,188,800California$734,700US $332,700
Median gross rent$2,802South San Francisco$2,802California$2,036US $1,413
Bachelor's degree or higher40.8%South San Francisco40.8%California37.1%US 35.7%
Mean commute25.6 minSouth San Francisco25.6 minCalifornia28.7 minUS 26.4 min
Population density6,987 / sq miSouth San Francisco6,987 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place South San Francisco city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as South San Francisco

ZIP codes with the USPS city name South San Francisco
ZIP City Type Population Median income Median home
94080 South San Francisco , CA Standard 64,761 $136,733 $1,188,700
94083 South San Francisco , CA No street area — — —

Other ZIP codes overlapping South San Francisco

These ZIP codes cover part of South San Francisco but are addressed as somewhere else.

ZIP codes overlapping South San Francisco
ZIP City Type Population Median income Median home
94066 San Bruno , CA Standard 42,728 $141,272 $1,207,500
94128 San Francisco , CA Standard 0 — —

Map of South San Francisco ZIP codes

9408094083

The ZIP codes of South San Francisco, CA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near South San Francisco

The nearest larger towns are Daly City (101,964 people, 5.8 mi), San Mateo (103,105 people, 7.5 mi) and Alameda (77,238 people, 8.7 mi).

Towns near South San Francisco
TownPopulationDistance
Brisbane 4,692 1.5 mi
San Bruno 42,307 3.6 mi
Millbrae 22,689 4.1 mi
Burlingame 30,525 4.6 mi
Daly City 101,964 5.8 mi
Broadmoor 4,586 6.3 mi
Pacifica 37,261 6.5 mi
Hillsborough 11,099 6.8 mi
San Mateo 103,105 7.5 mi
Alameda 77,238 8.7 mi
Foster City 32,792 9.3 mi
Montara 2,917 9.7 mi
Belmont 27,337 10.7 mi
El Granada 5,232 10.9 mi

More nearby: every ZIP code in San Mateo County · California ZIP codes

Cite this page

zipcodes.pro. “South San Francisco, CA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ca/south-san-francisco

Underlying data is public domain or openly licensed — sources, vintages and licences.