Foster City, California Population 2020

34,141

Foster City is a city located in California. With a 2020 population of 34,141, it is the 226th largest city in California and the 1147th largest city in the United States. Foster City is currently declining at a rate of -0.01% annually but its population has increased by 11.69% since the most recent census, which recorded a population of 30,567 in 2010. Foster City reached it's highest population of 34,297 in 2016. Spanning over 20 miles, Foster City has a population density of 8,994 people per square mile.

The average household income in Foster City is $177,868 with a poverty rate of 3.57%. The median rental costs in recent years comes to $3,002 per month, and the median house value is $1.15 Mn. The median age in Foster City is 40.1 years, 38.5 years for males, and 41.4 years for females. For every 100 females there are 99.8 males.

Foster City Demographics

According to the most recent ACS, the racial composition of Foster City was:

  • Asian: 47.49%
  • White: 43.74%
  • Two or more races: 4.64%
  • Black or African American: 2.52%
  • Other race: 1.24%
  • Native American: 0.24%
  • Native Hawaiian or Pacific Islander: 0.12%
The current population of Foster City, California is 34,141, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 34,151.The last official US Census in 2010 recorded the population at 30,567.

Foster City, California Population 2020

Population by Race

Race Population Percentage
Asian16,04447.49%
White14,77843.74%
Two or More Races1,5684.64%
Black or African American8532.52%
Some Other Race4201.24%
American Indian and Alaska Native800.24%
Native Hawaiian and Other Pacific Islander410.12%

Foster City Population Pyramid 2020

Foster City Median Age

40.1


Total

38.5


Male

41.4


Female

Foster City Adults

There are 26,158 adults, (5,247 of whom are seniors) in Foster City.

Foster City Age Dependency

61.6

Age Dependency Ratio

25.1

Old Age Dependency Ratio

36.5

Child Dependency Ratio

Foster City Sex Ratio

Female

16,907

50.04%

Male

16,877

49.96%

Foster City Households and Families

Foster City Renter vs Owner Occupied by Household Type

Foster City Household Types

Type Owner Renter
Female62.3%37.7%
Married61.5%38.5%
All58.3%41.7%
Non Family52.4%47.6%
Male38.7%61.3%

58.3%

Rate of Home Ownership

Type Count Average Size Owned
All12,6002.6758.3
Married7,7103.2161.5
Non Family3,5081.3852.4
Female9922.9662.3
Male3902.8538.7

3.12

Average Family Size

2.67

Average Household Size

3.8%

Unmarried (Opposite Sex)

0.1%

Unmarried (Same Sex)

Foster City Education

Education Attained Count Percentage
Less Than 9th Grade4371.77%
9th to 12th Grade4901.99%
High School Graduate1,7607.14%
Some College3,16212.82%
Associates Degree1,4745.98%
Bachelors Degree8,73935.44%
Graduate Degree8,59734.86%

Foster City Educational Attainment by Race

Name Total High School Bachelors
Asian11,79211,3389,355
White9,7519,4196,495
Hispanic1,8971,788700
Black678646400
Multiple Races539528383
Other Race253222104
Islander414118
Native American28283

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 79.33%.

Name Average Male Female
Overall$97,204$111,439$81,991
Less Than High School$35,341$36,989$20,592
High School Grad$50,489$51,957$29,200
Some College$55,756$64,972$39,892
Bachelors Degree$92,551$104,409$83,914
Graduate Degree$128,006$151,979$105,664

$97,204

Average Earnings

$111,439

Average Male

$81,991

Average Female

Foster City Language

Foster City Language by Age

Foster City Language

46.96% of Foster City residents speak only English, while 53.04% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 30.37% of the population.

Foster City Poverty

Foster City Poverty by Race

Name Total In Poverty Poverty Rate
Asian16,0175323.32%
White12,5313783.02%
Hispanic2,7532137.74%
Black852718.33%
Multiple1,568452.87%
Other420153.57%
Native801518.75%

3.57%

Overall Poverty Rate

3.28%

Male Poverty Rate

3.86%

Female Poverty Rate

Poverty in Foster City

The race most likely to be in poverty in Foster City is Native, with 18.75% below the poverty level.

The race least likely to be in poverty in Foster City is Multiple, with 2.87% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.29%. Among those working part-time, it was 5.44%, and for those that did not work, the poverty rate was 8.14%.

Name Poverty
Less Than High School16.79%
High School8.10%
Some College4.53%
Bachelors or Greater2.13%
Name Poverty
Female Unemployed10.39%
Male Unemployed6.18%
Male Employed1.84%
Female Employed1.46%

Foster City Income

Foster City Income by Household Type

Name Median Mean
Households$152,446$177,868
Families$168,132$194,849
Married Families$181,901-
Non Families$102,500$129,374

Foster City Marital Status

Foster City Marital Status

Marriage Rates

62.1%

Overall Marriage Rate

63.8%

Male Marriage Rate

60.4%

Female Marriage Rate

Foster City Married by Age and Sex

Foster City Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 35-44.

Foster City Marital Status by Race

Foster City Veterans

887

Number of Veterans

862

Male Veterans

25

Female Veterans

War Veterans
Vietnam237
First Gulf War188
Korea101
Second Gulf War88
World War II72
Age Group Veterans
75+301
65 to 74231
35 to 54231
55 to 64100
18 to 3424
Name Veterans % of Total
White6305.24%
Asian1291.05%
Black7310.66%
Hispanic562.68%
Hawaiian2356.10%
Indian1634.78%
2 or More91.20%
Other72.55%

$Foster City Veterans by Education

3.38%

Veteran Poverty Rate

24.35%

Veteran Disability Rate

Foster City Employment Status

68.1%

Labor Force Participation

65.8%

Employment Rate

3.5%

Unemployment Rate

Foster City Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

36.78%

Born in California

54.45%

Native Born

45.55%

Foreign Born

23.08%

Non Citizen

Place of Birth

54.45% of Foster City residents were born in the United States, with 36.78% having been born in California. 23.08% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Year Population Growth Annual Growth Rate
202034,141-5-0.01%
201934,146-5-0.01%
201834,151-141-0.41%
201734,292-5-0.01%
201634,2978102.42%
201533,4877692.35%
201432,7182870.88%
201332,4313251.01%
201232,1061,1393.68%
201130,9673571.17%
201030,6101,8070.61%
200028,8036270.22%
199028,1764,8891.92%
198023,28713,7659.35%
19709,5220.00%