Pittsburg, TX -- U.S. city in Texas Population (2000): 4347 Housing Units (2000): 1779 Land area (2000): 3.339044 sq. miles (8.648085 sq. km) Water area (2000): 0.004330 sq. miles (0.011214 sq. km) Total area (2000): 3.343374 sq. miles (8.659299 sq. km) FIPS code: 57908 Located within: Texas (TX), FIPS 48 Location: 32.997029 N, 94.968044 W ZIP Codes (1990): 75686 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Pittsburg, TX Pittsburg