Swansea, IL -- U.S. village in Illinois Population (2000): 10579 Housing Units (2000): 4110 Land area (2000): 5.072519 sq. miles (13.137764 sq. km) Water area (2000): 0.019767 sq. miles (0.051196 sq. km) Total area (2000): 5.092286 sq. miles (13.188960 sq. km) FIPS code: 74119 Located within: Illinois (IL), FIPS 17 Location: 38.541750 N, 89.987353 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Swansea, IL Swansea