County Dossier
Rock Island County
Illinois | County
Population
142,757
Land Area
427.5 sq mi
Context
Metro
Geography
County silhouette
- Land Area
- 427.5 sq mi
- Water Area
- 23.8 sq mi
- Water Share
- 5.3%
Terrain Layer
Open the county terrain view inside the atlas flow.
Population & Housing
Population
142,757
- Density
- 333.9 / sq mi
- Households
- 61,733
- Housing Units
- 66,759
- Median Age
- 40.3 years
Income & Economy
Median Household Income
$67,159
GDP
$12.61B
Real GDP Change+0.1%
- Per Capita Income
- $36,842
- Personal Income
- $7.72B
- Personal Income Per Capita
- $54,067
Classification
RUCC 2
Metro
Counties in metro areas of 250,000 to 1 million population
Relief
Min
317 ft
Mean
664 ft
Max
824 ft