Lafayette -- U.S. Parish in Louisiana Population (2000): 190503 Housing Units (2000): 78122 Land area (2000): 269.834502 sq. miles (698.868121 sq. km) Water area (2000): 0.455228 sq. miles (1.179034 sq. km) Total area (2000): 270.289730 sq. miles (700.047155 sq. km) Located within: Louisiana (LA), FIPS 22 Location: 30.207388 N, 92.038879 W Headwords: Lafayette Lafayette, LA Lafayette Parish Lafayette Parish, LA