DeKalb County, IL Map
Official Census boundary of DeKalb County, Illinois (FIPS 17037). Turn on flood zones, contours, land cover and school districts, measure distances, or click any spot to inspect it.
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DeKalb County Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
100,703
Households
39,550
Median household income
$70,724
Median age
32.7 years
Median home value
$243,600
Median gross rent
$1,049/mo
Owner-occupied homes
61.4%
Bachelor's degree or higher
33%
Below poverty level
14.8%
Land area
631.3 sq mi
Population density
160 / sq mi