San Diego County, California

San Diego County, California, had an estimated population of 3,282,248 in 2025 across 10,906 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among California's counties and nationally.

Population: 3,282,248; 2025 estimate
Area: 10,906 km²
Density: 301; per km²
Median income: $106,268; household, ACS 2024
Median age: 37.3; years, ACS 2024

How California's counties spread

Amenities & Infrastructure

Indicator	Value	In California	In the US
Households with Broadband2024	94.9%	7 / 58	72 / 3,144
Median Gross Rent2024	$2,246	10 / 56	15 / 3,137
Median Home Value2024	$854,700	10 / 58	24 / 3,139
Owner-Occupied Homes2024	54.6%	50 / 58	3,037 / 3,144
Vacant Homes2024	6.3%	44 / 58	2,785 / 3,144

Demography

Indicator	Value	In California	In the US
Aged 65 and Over2024	15.4%	39 / 58	2,717 / 3,144
American Indian & Alaska Native2024	0.2%	38 / 58	1,145 / 3,144
Asian, non-Hispanic2024	12.1%	13 / 58	47 / 3,144
Average Household Size2024people	2.7	30 / 58	335 / 3,144
Black, non-Hispanic2024	4.4%	13 / 58	1,168 / 3,144
Foreign-Born2024	22.8%	13 / 58	84 / 3,144
Hispanic or Latino2024	34.6%	21 / 58	196 / 3,144
Median Age2024years	37.3	38 / 58	2,617 / 3,144
Sex Ratio2024per 1,000 males	979	40 / 58	2,047 / 3,144
Speak a Language Other Than English2024	37.3%	25 / 58	131 / 3,144
Under 182024	20.9%	28 / 58	1,937 / 3,144
Veterans2024	7.3%	18 / 58	1,487 / 3,144
White, non-Hispanic2024	42.4%	31 / 58	2,838 / 3,144

Economy

Indicator	Value	In California	In the US
Below Poverty Line2024	10.3%	41 / 58	2,275 / 3,144
Households on SNAP2024	9.9%	37 / 58	1,938 / 3,144
Income Inequality2024index	0.458	35 / 58	1,142 / 3,144
Median Household Income2024	$106,268	14 / 58	117 / 3,143
Per Capita Income2024	$51,976	15 / 58	185 / 3,144
Unemployment Rate2024	6.1%	34 / 58	595 / 3,144

Education

Indicator	Value	In California	In the US
Bachelor's Degree or Higher2024	43.2%	10 / 58	193 / 3,144
High School or Higher2024	89.1%	22 / 58	1,825 / 3,144

Health Coverage

Indicator	Value	In California	In the US
No Health Insurance2024	6.4%	24 / 58	1,999 / 3,144
With a Disability2024	11.1%	49 / 58	2,858 / 3,144

Population & Density

Indicator	Value	In California	In the US
Population2025	3,282,248	2 / 58	5 / 3,144
Population Density2025/km²	301	9 / 58	197 / 3,144

Work & Commute

Indicator	Value	In California	In the US
Commute by Public Transit2024	1.9%	11 / 58	189 / 3,144
Households with No Vehicle2024	5.5%	28 / 58	1,492 / 3,144
Mean Commute Time2024minutes	25.5	31 / 58	1,238 / 3,143
Work from Home2024	18.7%	13 / 58	179 / 3,144

Other counties of California

Compare San Diego County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.