San Diego, CA Demographics
San Diego, CA is the 2nd most populous of 1611 cities in California, with 1,386,928 residents across 326 square miles. That is about 4,256 people per square mile.
At the 2020 census
| Population | 1,386,928 |
|---|---|
| Land area | 326 sq mi |
| Density | 4,256 / sq mi |
Data: 2020 Census · American Community Survey 2024
How San Diego, CA compares to the US
We're computing this city's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: San Diego, CA
Measured from the city's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around San Diego, CA — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
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About this page
This page shows demographics for a US city from the 2020 census and the American Community Survey: population, land area, density, and how the city compares to national averages for income, housing, age, and more.
City statistics cover the municipal boundary only. For the wider region, see the containing metro area; for a custom area, open the city in the radius tool and measure any distance or drive time around it.