Troy, TX -- U.S. city in Texas Population (2000): 1378 Housing Units (2000): 527 Land area (2000): 3.556150 sq. miles (9.210386 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 3.556150 sq. miles (9.210386 sq. km) FIPS code: 73748 Located within: Texas (TX), FIPS 48 Location: 31.202907 N, 97.301719 W ZIP Codes (1990): 76579 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Troy, TX Troy