Sulphur, LA -- U.S. city in Louisiana Population (2000): 20512 Housing Units (2000): 8665 Land area (2000): 10.040262 sq. miles (26.004157 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 10.040262 sq. miles (26.004157 sq. km) FIPS code: 73640 Located within: Louisiana (LA), FIPS 22 Location: 30.230355 N, 93.360837 W ZIP Codes (1990): 70663 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Sulphur, LA Sulphur