'Rockdale, IL' definitions:

Rockdale, IL -- U.S. village in Illinois

From: Gazetteer 2000
Name :
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.