Georgetown, IL -- U.S. city in Illinois Population (2000): 3628 Housing Units (2000): 1564 Land area (2000): 1.612011 sq. miles (4.175090 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.612011 sq. miles (4.175090 sq. km) FIPS code: 28963 Located within: Illinois (IL), FIPS 17 Location: 39.978505 N, 87.636240 W ZIP Codes (1990): 61846 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Georgetown, IL Georgetown