New Castle County, DE Map
Official Census boundary of New Castle County, Delaware (FIPS 10003). Turn on flood zones, contours, land cover and school districts, measure distances, or click any spot to inspect it.
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New Castle County Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
577,961
Households
224,173
Median household income
$91,166
Median age
39.3 years
Median home value
$352,200
Median gross rent
$1,448/mo
Owner-occupied homes
69%
Bachelor's degree or higher
39.7%
Below poverty level
10.1%
Land area
426.3 sq mi
Population density
1,356 / sq mi