County Dossier
Marshall County
Iowa | County
Population
40,114
Land Area
572.5 sq mi
Context
Nonmetro
Geography
County silhouette
- Land Area
- 572.5 sq mi
- Water Area
- 0.7 sq mi
- Water Share
- 0.1%
Terrain Layer
Open the county terrain view inside the atlas flow.
Population & Housing
Population
40,114
- Density
- 70.1 / sq mi
- Households
- 15,496
- Housing Units
- 16,937
- Median Age
- 38.5 years
Income & Economy
Median Household Income
$73,315
GDP
$2.32B
Real GDP Change-0.7%
- Per Capita Income
- $33,544
- Personal Income
- $2.10B
- Personal Income Per Capita
- $51,945
Classification
RUCC 4
Nonmetro
Urban population of 20,000 or more, adjacent to a metro area
Relief
Min
798 ft
Mean
986 ft
Max
1,150 ft