Foster City demographics profile

StatisticFoster CityCaliforniaNational
Population density (sq mi)8,68523291
Median age40.836.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)68%52%55%
Families w/ Kids under 1844%46%43%
Speak English49%56%79%
Speak Spanish3%29%13%
Foster City, CA has a population of 32,967 and is the 1,291st largest city in the United States. The population density is 8,685 per sq mi which is 3637% higher than the California average and 9486% higher than the national average. The median age in Foster City is 41 which is approximately 13% higher than the California average of 36. In Foster City, 68% of the population over 15 years of age are married, 49% speak English and 3% speak Spanish. 36% of Foster City residents were born in California, 18% were born out of state, 2% were born outside of the United States and 44% were foreign born.
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Did you know?

  • The population density in Foster City is 3637% higher than California.
  • The median age in Foster City is 13% higher than California.
  • In Foster City 44.71% of the population is White.
  • In Foster City 1.81% of the population is Black or African American.
  • In Foster City 46.94% of the population is Asian.

Compare Foster City, CA Demographics To Other Cities

Foster City population breakdown by race

RaceFoster CityCaliforniaNational
Black or African American1.81%5.85%12.63%
American Indian0.22%0.74%0.82%
Native Hawaiian0.11%0.39%0.18%
Mixed race5.38%4.62%3.06%
Other race0.83%13.28%4.75%
In Foster City, 4.5% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Foster City age breakdown

Marital status

Age of children in married couples

Source: The Foster City, CA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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