'Waterloo, IL' definitions:

Waterloo, IL -- U.S. city in Illinois

From: Gazetteer 2000
Name :
Waterloo, IL -- U.S. city in Illinois
Population (2000) :
7614
Housing Units (2000) :
3015
Land area (2000) :
5.566509 sq. miles (14.417192 sq. km)
Water area (2000) :
0.050945 sq. miles (0.131947 sq. km)
Total area (2000) :
5.617454 sq. miles (14.549139 sq. km)
FIPS code :
79150
Located within :
Illinois (IL), FIPS 17
Location :
38.335243 N, 90.152685 W
ZIP Codes (1990) :
62298
Note :
some ZIP codes may be omitted esp. for suburbs.