Clairton, PA -- U.S. city in Pennsylvania Population (2000): 8491 Housing Units (2000): 4350 Land area (2000): 2.763770 sq. miles (7.158130 sq. km) Water area (2000): 0.245007 sq. miles (0.634566 sq. km) Total area (2000): 3.008777 sq. miles (7.792696 sq. km) FIPS code: 13704 Located within: Pennsylvania (PA), FIPS 42 Location: 40.296419 N, 79.887090 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Clairton, PA Clairton