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New Castle County, Delaware

US county information
NameNew Castle County
Largest cityWilmington
US Area
Total Area493.51 sq mi (1278.2 km2)
Land Area426.27 sq mi (1104 km2)
Water Area67.24 sq mi (174.2 km2)
Population538479 (2010)
Density488.1/km2 (1264.2/sq mi)
Congressional districtAt-large

     Home | County | New Castle County Delaware

New Castle County is the northernmost of the three counties of the U.S. state of Delaware. As of 2010 its population was 538,479, an increase of 7.6% over the previous decade. The county seat is Wilmington. The center of population of Delaware is located in New Castle County, in the town of Townsend. It is the most affluent of the three counties in the state of Delaware. In addition it is the smallest in area but largest in population.

This county is part of the Delaware Valley area.

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