Denison, TX -- U.S. city in Texas Population (2000): 22773 Housing Units (2000): 10309 Land area (2000): 22.590845 sq. miles (58.510017 sq. km) Water area (2000): 0.323020 sq. miles (0.836619 sq. km) Total area (2000): 22.913865 sq. miles (59.346636 sq. km) FIPS code: 19900 Located within: Texas (TX), FIPS 48 Location: 33.749703 N, 96.557393 W ZIP Codes (1990): 75020 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Denison, TX Denison