'Philadelphia County' definitions:
Philadelphia -- U.S. County in Pennsylvania
From: Gazetteer 2000
Name :
Philadelphia -- U.S. County in Pennsylvania
Population (2000) :
1517550
Housing Units (2000) :
661958
Land area (2000) :
135.090104 sq. miles (349.881748 sq. km)
Water area (2000) :
7.546133 sq. miles (19.544394 sq. km)
Total area (2000) :
142.636237 sq. miles (369.426142 sq. km)
Located within :
Pennsylvania (PA), FIPS 42
Location :
39.998012 N, 75.144793 W