Stephenson County, IL Map
Official Census boundary of Stephenson County, Illinois (FIPS 17177). Turn on flood zones, contours, land cover and school districts, measure distances, or click any spot to inspect it.
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Stephenson County Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
43,768
Households
19,358
Median household income
$64,043
Median age
45.3 years
Median home value
$134,900
Median gross rent
$798/mo
Owner-occupied homes
70.9%
Bachelor's degree or higher
20.7%
Below poverty level
13.9%
Land area
564.2 sq mi
Population density
78 / sq mi