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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 one of only two counties covered in its entirety by area code 610 (the other one being Chester County). |