County Dossier

Alameda County

California | County

Population

1,649,473

Land Area

737.5 sq mi

Context

Metro

Geography

County silhouette

Land Area
737.5 sq mi
Water Area
83.7 sq mi
Water Share
10.2%

Terrain Layer

Open the county terrain view inside the atlas flow.

Terra Firma

Population & Housing

Population

1,649,473

Density
2,236.7 / sq mi
Households
598,246
Housing Units
637,212
Median Age
39.0 years

Income & Economy

Median Household Income

$129,367

GDP

$182.54B

Real GDP Change+1.0%
Per Capita Income
$65,862
Personal Income
$183.49B
Personal Income Per Capita
$111,268

Classification

RUCC 1
Metro

Counties in metro areas of 1 million population or more

Relief

Min

-17 ft

Mean

759 ft

Max

3,825 ft

Provenance

GEOID 06001 ANSI 01675839
Latitude 37.64714 Longitude -121.91249
Canonical 2025 Gazetteer ACS ACS 2020-2024 5-year BEA BEA county 2024 release (2026-02-05) BLS BLS LAUS 2024 annual average USDA USDA RUCC 2023 USGS USGS 3DEP published as of 2026-03-23