County Dossier
Mercer County
Illinois | County
Population
15,495
Land Area
561.2 sq mi
Context
Metro
Geography
County silhouette
- Land Area
- 561.2 sq mi
- Water Area
- 7.5 sq mi
- Water Share
- 1.3%
Terrain Layer
Open the county terrain view inside the atlas flow.
Population & Housing
Population
15,495
- Density
- 27.6 / sq mi
- Households
- 6,565
- Housing Units
- 7,285
- Median Age
- 44.7 years
Income & Economy
Median Household Income
$74,182
GDP
$589.64M
Real GDP Change+6.9%
- Per Capita Income
- $39,391
- Personal Income
- $935.32M
- Personal Income Per Capita
- $61,164
Classification
RUCC 2
Metro
Counties in metro areas of 250,000 to 1 million population
Relief
Min
521 ft
Mean
681 ft
Max
819 ft