Trenton, IL -- U.S. city in Illinois Population (2000): 2610 Housing Units (2000): 1087 Land area (2000): 0.982646 sq. miles (2.545042 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.982646 sq. miles (2.545042 sq. km) FIPS code: 75991 Located within: Illinois (IL), FIPS 17 Location: 38.605943 N, 89.681725 W ZIP Codes (1990): 62293 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Trenton, IL Trenton