Foster City, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Foster City, California is 32,964 as of the 2023 American Community Survey, making it the 245th-largest city in California. The median household income is $193,633, the median home value is $1,774,500, and the median age is 39.7.
The population has grown 6.7% since 2010 (30,609 → 32,657).
32,964
Population
8705
People / sq mi
$193,633
Median Income
$1,774,500
Median Home Value
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Foster City covers 3.8 sq mi of land at 8705 people per square mile.
About Foster City, CA
Housing cost is the defining feature of Foster City: the median home is valued at $1,774,500. With 32,964 residents, Foster City is a city in California.
Earnings sit at the high end: a median household income of $193,633, above the US median of $78,538. The poverty rate, 3.3%, is on the lower side for US cities and below the national 12.4%. Real estate commands a premium here — a median home value of $1,774,500, with typical rent around $3,501.
The population is unusually well-credentialed for US cities — 74.1% of adults have a four-year degree, above the national 35.0%. Working from home is common here: 30.1% of workers do so, above the national 14.0%, and the average commute runs about 31 minutes each way.
High housing values reframe the income picture in Foster City — even solid earnings stretch less against home prices and rents at this level.
Foster City city Population History (2010-2024)
The city of Foster City city had a population of 30,609 in 2010 and 32,657 in 2024, a 6.7% growth over 14 years. The peak was 34,292 in 2017. Average annual growth rate: 0.48%.
32,657
Population (2024)
30,609
Population (2010)
34,292
Peak (2017)
0.48%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 30,609 |
| 2011 | 30,965 |
| 2012 | 32,098 |
| 2013 | 32,416 |
| 2014 | 32,698 |
| 2015 | 33,470 |
| 2016 | 34,279 |
| 2017 | 34,292 |
| 2018 | 34,109 |
| 2019 | 33,901 |
| 2020 | 33,737 |
| 2021 | 32,742 |
| 2022 | 32,453 |
| 2023 | 32,442 |
| 2024 | 32,657 |
Race & Ethnicity
| White | 33.0% |
| Black or African American | 1.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.1% |
Economy & Income
$193,633
Median Household Income
$95,509
Per Capita Income
3.3%
Poverty Rate
3.2%
Unemployment Rate
Housing
$1,774,500
Median Home Value
$3,501
Median Rent
51.2%
Owner-Occupied
Education
95.9%
High School+
74.1%
Bachelor's+
Commute
3.9%
Drive Alone
55.1%
Public Transit
30.1%
Work From Home
30.7 min
Avg Commute
Community Profile
15.1%
Foreign Born
46.3%
Non-English at Home
2.8%
Veterans
8.9%
With Disability
97.7%
Health Insurance
98.8%
Internet Access
Employment by Industry
| Finance, Insurance & Real Estate | 30.6% |
| Professional, Scientific & Management | 14.0% |
| Manufacturing | 13.3% |
| Transportation & Warehousing | 9.1% |
| Information | 9.0% |
| Retail Trade | 5.3% |
| Education, Health Care & Social Services | 4.0% |
| Arts, Entertainment & Food Services | 2.9% |
| Construction | 2.5% |
| Public Administration | 2.2% |
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Frequently Asked Questions
Foster City, California has a population of 32,964 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 245th-largest city in California.
The median household income in Foster City, California is $193,633, with 3.3% of residents living below the federal poverty level.
The median home value in Foster City, California is $1,774,500, with median monthly rent at $3,501 and a homeownership rate of 51.2%.
The median age in Foster City, California is 39.7 years. The population is 48.4% male and 51.6% female.
The population has grown 6.7% since 2010 (30,609 → 32,657).
Where to stay in Foster City
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.