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Foster City, CA
City in San Mateo County, California. ZIP codes: 94404.
Population
32,792
Land area
3.8sq mi
People per sq mi
8,659
ZIP codes
1
Foster City and its ZIP codes
Foster City at a glance
- Foster City is about 34 times as dense as California as a whole.
- It is the 248th most populous of 1,570 cities and towns in California.
- Households here earn a median of $199,143 a year, about 2 times the California figure of $99,122.
- A typical owner-occupied home is valued at $1,838,200 (about 2.5 times the California figure) and median rent is more than $3,500 a month.
Local data for Foster City, CA
Counts from official public data
Housing and community stats
Foster City, CA, American Community Survey 2020-2024
Median household income
$199,143
Poverty rate
4.1%
Median home value
$1,838,200
Median rent
$3,500+/mo
Homeownership
50.8%
Bachelor's or higher
73.8%
Median age
39.5
Average commute
29.4 min
Largest reported origins and ancestries: Chinese Americans (7,982), Indian Americans (4,694), Filipino Americans (1,440).
Economy and federal money
Jobs, pay, income and spending are for San Mateo County. PPP loans are for Foster City.
Unemployment rate
4.0%
Aug 2026, -0.3 pts in a year
Average annual pay
$214,295
411,346 jobs, 2025
Income per person
$179,656
BEA, 2024
Federal spending
$5.1B
FY 2026, $6,619 per person
PPP loans
$155M
892 loans, 12,735 jobs reported
How people get to work
Foster City, CA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone51.8%
- Carpooled7.5%
- Public transit2.9%
- Walked1.7%
- Bicycle1.0%
- Taxi, ride-hailing, motorcycle or other0.9%
- Worked from home34.2%
Average one-way commute: 29.4 minutes for people who do not work from home.
Environment and hazard risk
Foster City, CA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: earthquake
Storm events since 1996
690
Countywide, mostly strong wind
Flood insurance policies
3,346
1.8% of homes, county
July high / Jan low
81° / 41°F
19.0 inches of rain a year
Health statistics
Share of adults in Foster City, CA, CDC PLACES estimates
Obesity
17.8%
U.S. 33.3% -15.5 pts
Diabetes
8.7%
U.S. 12.1% -3.4 pts
Smoking
5.8%
U.S. 12.8% -7.0 pts
Uninsured (18-64)
3.6%
U.S. 11.1% -7.5 pts
ZIP codes in Foster City
1 in or overlapping Foster City. Population shown
Cities near Foster City
| Name | Distance | Land area (sq mi) |
|---|---|---|
| San MateoCity | 2.6 mi | 12.1 |
| BelmontCity | 3.2 mi | 4.6 |
| San CarlosCity | 3.9 mi | 5.4 |
| Baywood ParkCensus-designated place | 4.7 mi | 0.5 |
| Redwood CityCity | 5 mi | 19.3 |
| HighlandsCensus-designated place | 5.1 mi | 1.3 |
| HillsboroughTown | 5.2 mi | 6.2 |
| BurlingameCity | 5.9 mi | 4.4 |
| Emerald Lake HillsCensus-designated place | 6.1 mi | 1.2 |
| North Fair OaksCensus-designated place | 6.4 mi | 1.2 |
| AthertonTown | 7.9 mi | 5 |
| MillbraeCity | 8.2 mi | 3.3 |
| Menlo ParkCity | 8.5 mi | 10 |
| West Menlo ParkCensus-designated place | 8.9 mi | 0.5 |
| East Palo AltoCity | 9.2 mi | 2.5 |
| WoodsideTown | 9.5 mi | 11.5 |
Frequently asked questions
- What county is Foster City, CA in?
- Foster City is in San Mateo County, California.
- What ZIP codes are in Foster City, CA?
- ZIP codes in or overlapping Foster City include 94404.
- What is the population of Foster City, CA?
- About 32,792 people live in Foster City, based on American Community Survey 5-year estimates.
- What cities are near Foster City?
- Nearby places include San Mateo (2.6 mi), Belmont (3.2 mi), San Carlos (3.9 mi), Baywood Park (4.7 mi), Redwood City (5 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023