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Delaware County, Pennsylvania

Delaware County Pennsylvania
US county information
NameDelaware County
Largest cityChester
US Area
Total Area191 sq mi (494.7 km2)
Land Area184 sq mi (476.6 km2)
Water Area7 sq mi (18.1 km2)
Population558979 (2010)
Density1171.8/km2 (3035/sq mi)
FoundedSeptember 26, 1789

     Home | County | Delaware County Pennsylvania

Delaware County is a county located in the U.S. state of Pennsylvania. As of 2010, the population was 558,979, making it Pennsylvania's fifth most populous county, behind Philadelphia, Allegheny, Montgomery, and Bucks counties.

Delaware County was created on September 26, 1789, from part of Chester County and named for the Delaware River. Its county seat, since 1851, is Media . Chester City, prior to 1851, was the county seat of both Delaware County and, before that, of Chester County.

Delaware County consists of communities adjacent to the city of Philadelphia. Socioeconomically, Delaware County consists of working class, middle-class, and upper-class neighborhoods.

2600 acre (10.5 km2) of the county are occupied by the Ridley Creek State Park.

The county, immediately adjacent to and west of Philadelphia, is part of the Delaware Valley area. Delaware County is the only county covered in its entirety by area code 610.

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