Johnson County, KS Map
Official Census boundary of Johnson County, Kansas (FIPS 20091). Turn on flood zones, contours, land cover and school districts, measure distances, or click any spot to inspect it.
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Johnson County Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
620,631
Households
249,531
Median household income
$109,208
Median age
38.6 years
Median home value
$391,200
Median gross rent
$1,434/mo
Owner-occupied homes
68.5%
Bachelor's degree or higher
57.6%
Below poverty level
5.4%
Land area
473.6 sq mi
Population density
1,310 / sq mi