Port Byron, IL -- U.S. village in Illinois Population (2000): 1535 Housing Units (2000): 659 Land area (2000): 2.310603 sq. miles (5.984433 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.310603 sq. miles (5.984433 sq. km) FIPS code: 61223 Located within: Illinois (IL), FIPS 17 Location: 41.618051 N, 90.332789 W ZIP Codes (1990): 61275 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Port Byron, IL Port Byron