St. Johns County, FL Map
Official Census boundary of St. Johns County, Florida (FIPS 12109). Turn on flood zones, contours, land cover and school districts, measure distances, or click any spot to inspect it.
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St. Johns County Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
306,934
Households
115,794
Median household income
$109,839
Median age
44.2 years
Median home value
$489,200
Median gross rent
$1,922/mo
Owner-occupied homes
82.2%
Bachelor's degree or higher
50.9%
Below poverty level
6.5%
Land area
600.6 sq mi
Population density
511 / sq mi