Dilley, TX -- U.S. city in Texas Population (2000): 3674 Housing Units (2000): 1158 Land area (2000): 2.333756 sq. miles (6.044401 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.333756 sq. miles (6.044401 sq. km) FIPS code: 20428 Located within: Texas (TX), FIPS 48 Location: 28.670824 N, 99.169820 W ZIP Codes (1990): 78017 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dilley, TX Dilley