Madison County, IL Map
Official Census boundary of Madison County, Illinois (FIPS 17119). Turn on flood zones, contours, land cover and school districts, measure distances, or click any spot to inspect it.
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Madison County Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
264,238
Households
110,134
Median household income
$75,793
Median age
40.2 years
Median home value
$173,000
Median gross rent
$1,024/mo
Owner-occupied homes
74.2%
Bachelor's degree or higher
31%
Below poverty level
11.1%
Land area
715.5 sq mi
Population density
369 / sq mi