Falls City, TX -- U.S. city in Texas Population (2000): 591 Housing Units (2000): 242 Land area (2000): 0.904505 sq. miles (2.342656 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.904505 sq. miles (2.342656 sq. km) FIPS code: 25392 Located within: Texas (TX), FIPS 48 Location: 28.980718 N, 98.019600 W ZIP Codes (1990): 78113 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Falls City, TX Falls City