County Dossier
Johnson County
Iowa | County
Population
156,639
Land Area
613.0 sq mi
Context
Metro
Geography
County silhouette
- Land Area
- 613.0 sq mi
- Water Area
- 10.1 sq mi
- Water Share
- 1.6%
Terrain Layer
Open the county terrain view inside the atlas flow.
Population & Housing
Population
156,639
- Density
- 255.5 / sq mi
- Households
- 63,341
- Housing Units
- 68,217
- Median Age
- 31.0 years
Income & Economy
Median Household Income
$74,935
GDP
$12.64B
Real GDP Change+1.7%
- Per Capita Income
- $45,136
- Personal Income
- $10.57B
- Personal Income Per Capita
- $66,028
Classification
RUCC 3
Metro
Counties in metro areas of fewer than 250,000 population
Relief
Min
529 ft
Mean
741 ft
Max
904 ft