California Demographics

Population 39,287,377 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in California

Household size in California

Household size, people per household
PeriodCaliforniaU.S.
2006–103.042.68
2010–143.102.73
2015–193.092.71
2020–243.012.65
Change−0.03−0.03
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Households in California are large by national standards, averaging 3.01 people against 2.65 for the U.S. That usually means more families with children at home. Household size has edged down from 3.04 in 2006–10, mirroring the country. Only two of the 50 states and D.C. have larger households.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in California

Median age, years
PeriodCaliforniaU.S.
2006–1035.837.7
2010–1436.838.6
2015–1937.939.6
2020–2439.040.1
Change+3.1+2.3
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At 39.0, the median age in California is close to the national median of 40.1, so its age mix looks much like the country's. Since 2006–10, the median age has climbed from 35.8, in line with the national trend.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in California

Single-parent households, % of households
PeriodCaliforniaU.S.
2006–1013.5%12.3%
2010–1413.5%12.3%
2015–1912.3%11.6%
2020–2412.3%11.6%
Change−1.2 pts−0.6 pts
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Single parents head about one in eight households in California (12.3%), close to the national share of 11.6%. The single-parent share is down 1.2 points from 2006–10, as it has nationally. California has a higher share of single-parent households than the great majority of states.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in California

Renters in California

Renters, % of occupied homes
PeriodCaliforniaU.S.
2006–1042.6%33.3%
2010–1445.2%35.6%
2015–1945.2%36.0%
2020–2444.1%34.8%
Change+1.5 pts+1.5 pts
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Renting is more common in California than nationally: 44.1% of households rent their homes, against 34.8% for the U.S. Among homeowners, 33.8% have no mortgage at all, below the national share of 39.8%. Since 2006–10, the renter share has risen 1.5 points, mirroring the country. Few states have a higher share of renters: only two of 51.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in California

Vacant homes, % of all homes
PeriodCaliforniaU.S.
2006–108.7%11.4%
2010–148.1%11.4%
2015–197.5%11.1%
2020–247.3%9.6%
Change−1.4 pts−1.8 pts
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Vacancy is on the low side in California: 7.3% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. Vacancy has edged down 1.4 points since 2006–10, as it has nationally. Of the 50 states and D.C., only three have a lower vacancy rate.

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in California

Age of homes, median year built
PeriodCaliforniaU.S.
2006–1019721974
2010–1419731975
2015–1919741977
2020–2419761980
Change+4+6
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The typical home in California was built around 1976, about the same vintage as the country's housing overall (1980). The median year built has moved up from 1972 in 2006–10, a sign of steady new building.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in California

Rent, per month
PeriodCaliforniaU.S.
2006–10$1,298$965
2010–14$1,379$1,040
2015–19$1,721$1,213
2020–24$2,229$1,571
Change+$931+$606
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The median renter in California pays $2,229 a month for rent and utilities, well above the national median of $1,571. Rent has climbed $931 a month since 2006–10, up 72%, faster than rents rose nationally. Rent takes 33.9% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched. California has the highest rents of any state.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in California

Bachelor's degrees in California

Bachelor's degrees, % of adults 25+
PeriodCaliforniaU.S.
2006–1029.1%28.4%
2010–1430.1%29.6%
2015–1932.9%32.1%
2020–2436.3%35.6%
Change+7.1 pts+7.2 pts
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More than a third of adults 25 and older in California (36.3%) hold at least a bachelor's degree, close to the national share of 35.6%. The share with a degree has risen 7.1 points since 2006–10, in line with the national trend.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in California

High school graduates, % of adults 25+
PeriodCaliforniaU.S.
2006–1079.9%84.9%
2010–1480.7%86.1%
2015–1982.6%87.7%
2020–2484.2%89.3%
Change+4.3 pts+4.3 pts
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Nearly one in six adults in California never finished high school, well above the national share: only 84.2% have a diploma or equivalent, against 89.3% nationally. The share with a diploma is up 4.3 points from 2006–10, in line with the national trend. California has the lowest share of high school graduates of any state.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in California

Unemployment, % of the labor force
PeriodCaliforniaU.S.
2006–109.2%8.1%
2010–1411.3%9.4%
2015–196.3%5.6%
2020–246.6%5.4%
Change−2.6 pts−2.7 pts
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Jobs have been a little harder to find in California than nationally: unemployment was 6.6%, against 5.4%. Of the 50 states and D.C., only two have higher unemployment. Unemployment has fallen 2.6 points since 2006–10, in line with the national trend.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

California compared with nearby states

StateHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
California3.0139.012.3%44.1%7.3%1976$2,22936.3%84.2%6.6%
Nevada2.7340.012.8%40.0%9.0%1995$1,78727.5%87.1%6.9%
Arizona2.7040.412.6%32.6%9.6%1992$1,73633.3%89.1%5.3%
Utah3.1133.18.9%29.8%7.3%1991$1,70138.3%93.5%3.5%
Oregon2.5041.610.4%36.7%7.4%1981$1,60136.4%91.5%5.3%
Idaho2.7938.29.3%27.9%9.3%1989$1,40731.7%92.1%3.8%
New Mexico2.6340.514.4%30.0%11.9%1985$1,18830.2%87.5%6.0%
Washington2.6139.610.1%36.2%7.6%1984$1,87538.8%91.9%5.1%
Colorado2.5439.19.3%33.8%7.3%1988$1,96345.9%92.8%4.6%
Wyoming2.3940.29.2%28.2%12.1%1981$1,09130.6%94.1%3.8%
Montana2.4441.58.8%30.8%12.2%1982$1,18935.3%94.6%3.7%

All figures 2020–24.

States with similar populations: Alaska · Hawaii · Puerto Rico · Arkansas · Florida · Louisiana · Maine · Massachusetts · Minnesota · Montana

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up California. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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