Pittsburg, KS -- U.S. city in Kansas Population (2000): 19243 Housing Units (2000): 8855 Land area (2000): 12.445076 sq. miles (32.232598 sq. km) Water area (2000): 0.060598 sq. miles (0.156949 sq. km) Total area (2000): 12.505674 sq. miles (32.389547 sq. km) FIPS code: 56025 Located within: Kansas (KS), FIPS 20 Location: 37.410320 N, 94.699816 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Pittsburg, KS Pittsburg