Plum Grove, TX -- U.S. city in Texas Population (2000): 930 Housing Units (2000): 314 Land area (2000): 7.313289 sq. miles (18.941331 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 7.313289 sq. miles (18.941331 sq. km) FIPS code: 58448 Located within: Texas (TX), FIPS 48 Location: 30.207185 N, 95.091518 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Plum Grove, TX Plum Grove