Foster City, CA Profile: Facts & Data

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Foster City, California - Basic Facts

The City of Foster City had a population of 33,293 as of July 1, 2019. Foster City ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Foster City is located at latitude 37.5585 and longitude -122.2711 in San Mateo County. The formal boundaries for the City of Foster City encompass a land area of 3.8 sq. miles and a water area of 16.05 sq. miles. San Mateo County is in the Pacific time zone (GMT -8). The elevation is 7 feet.

The City of Foster City (GNIS ID: 2410534) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Foster City is located within San Mateo CCD of San Mateo County.


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  1. Foster City 2019 Demographic Data
  2. Growth Rates for Foster City (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2019 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2019, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


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Foster City, CA Data & Demographics (As of July 1, 2019)

HOUSING AFFORDABILITY INDEX

Foster City, CA Housing Affordability Index is 59
State of California Housing Affordability Index is 67
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.

WEALTH INDEX

Foster City, CA Wealth Index is 245
State of California Wealth Index is 123
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.

These new demographic attributes are availiable for Neighborhoods, Cities, Counties, and ZIP Codes.

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  4. See the References & Data Sources page for more information about methodology and sources of data.
  5. See the California COVID-19 Data and US COVID-19 Data for more information on the spread of the novel coronavirus.

POPULATION

Total Population 33,293 (100%)
Population in Households 33,185 (99.7%)
Population in Families 27,800 (83.5%)
Population in Group Quarters1 108 ( 0.3%)
Population Density 8,771
Diversity Index2 62
 

INCOME

Median Household Income $154,589
Average Household Income $191,267
Per Capita Income $75,111
Wealth Index4 245

HOUSING

Total Housing Units 13,481 (100%)
Owner Occupied HU 7,283 (54.0%)
Renter Occupied HU 5,790 (42.9%)
Vacant Housing Units 408 ( 3.0%)
Median Home Value $1,330,172
Housing Affordability Index3 59
 

HOUSEHOLDS

Total Households 13,073
Average Household Size 2.54
Family Households 9,108
Average Family Size 3
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.

GROWTH RATE / YEAR

2010-2019 2019-2024
Population 0.93% 0.69%
Households 0.92% 0.68%
Families 0.87% 0.66%
Median Household Income   1.9%
Per Capita Income   2.26%

Foster City, CA - Peer Comparisons by Rank and Percentile

The table below compares Foster City to the other 1,521 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2019 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 249 84th
Population Density # 87 94th
Diversity Index # 815 47th
Median Household Income # 68 96th
Per Capita Income # 82 95th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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