Foster City

City in San Mateo County, California

View of Foster City, California
Photo: Pi.1415926535 · CC BY-SA 3.0

Foster City is a city in San Mateo County, California, with 33,805 residents (2020 Census). It sits at 7 ft (2 m) above sea level. The nearest town is San Mateo, 3.3 miles W.

About Foster City

Foster City is a master-planned city located in San Mateo County, California, United States. Foster City is sometimes considered to be part of Silicon Valley for its local industry and its proximity to Silicon Valley cities. There are many notable companies headquartered in Foster City, such as Gilead Sciences, Zoox, and Replit. Visa and Sledgehammer Games were formerly headquartered in Foster City.

The 2020 census put the population at 33,805, an increase of more than 10% over the 2010 census figure of 30,567.

Foster City contains at least 10 bridges of which seven cross its lagoon, two go across Highway 92 and one is the San Mateo-Hayward Bridge which crosses the San Francisco Bay.

Foster City is one of the United States’ safest cities, with an average of one murder per decade.

Text: Wikipedia · CC BY-SA 4.0

Foster City weather: 7-day forecast

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Source: National Weather Service (NOAA).

Live webcams in Foster City

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Webcams: Windy.com · Traffic cameras: Caltrans

Living in Foster City

Median household income
$199,143
Median home value
$1,838,200
Median rent
$3,501/mo
Median age
39.5
Cost of living and demographics of Foster City ›

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Map of Foster City

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Foster City Street View

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Foster City, CA population

Foster City had 33,805 residents in the 2020 Census.

2020 Census33,805
Density8,926 per sq mi (3,446 per km²)

Source: U.S. Census Bureau, Decennial Census.

Foster City at a glance

StateCalifornia (CA)
CountySan Mateo County
TypeCity
Population33,805 (2020)
Land area3.79 sq mi (9.8 km²)
Water area16.05 sq mi (41.56 km²)
Elevation7 ft (2 m)
Coordinates37.5648° N, 122.2508° W
ZIP code94404
Official websitefostercity.org
Census code (GEOID)0625338

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Foster City

Straight-line distance between town centers.

Frequently asked questions about Foster City

What county is Foster City in?

Foster City is in San Mateo County, California.

What is the population of Foster City, CA?

33,805 people lived in Foster City at the 2020 Census.

What is the ZIP code of Foster City, CA?

The ZIP code of Foster City is 94404.

What is the elevation of Foster City?

7 feet (2 m) above sea level.

What towns are near Foster City?

San Mateo (3.3 mi), Redwood City (4.0 mi), Belmont (4.2 mi), San Carlos (4.6 mi), Baywood Park (5.6 mi).

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