County Dossier
San Mateo County
California | County
Population
742,340
Land Area
448.6 sq mi
Context
Metro
Geography
County silhouette
- Land Area
- 448.6 sq mi
- Water Area
- 292.4 sq mi
- Water Share
- 39.5%
Terrain Layer
Open the county terrain view inside the atlas flow.
Population & Housing
Population
742,340
- Density
- 1,654.8 / sq mi
- Households
- 264,419
- Housing Units
- 287,184
- Median Age
- 40.9 years
Income & Economy
Median Household Income
$158,855
GDP
$217.02B
Real GDP Change+9.7%
- Per Capita Income
- $84,288
- Personal Income
- $133.47B
- Personal Income Per Capita
- $179,656
Classification
RUCC 1
Metro
Counties in metro areas of 1 million population or more
Relief
Min
-34 ft
Mean
371 ft
Max
2,604 ft