'Riverdale, IL' definitions:

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

From: Gazetteer 2000
Name :
Riverdale, IL -- U.S. village in Illinois
Population (2000) :
15055
Housing Units (2000) :
5441
Land area (2000) :
3.637723 sq. miles (9.421660 sq. km)
Water area (2000) :
0.148109 sq. miles (0.383601 sq. km)
Total area (2000) :
3.785832 sq. miles (9.805261 sq. km)
FIPS code :
64278
Located within :
Illinois (IL), FIPS 17
Location :
41.640684 N, 87.630645 W
ZIP Codes (1990) :
60627
Note :
some ZIP codes may be omitted esp. for suburbs.