Rockdale, IL -- U.S. village in Illinois Population (2000): 1888 Housing Units (2000): 826 Land area (2000): 0.794132 sq. miles (2.056793 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.794132 sq. miles (2.056793 sq. km) FIPS code: 64902 Located within: Illinois (IL), FIPS 17 Location: 41.507480 N, 88.115233 W ZIP Codes (1990): 60436 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Rockdale, IL Rockdale