'Monmouth, IL' definitions:

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

From: Gazetteer 2000
Name :
Monmouth, IL -- U.S. city in Illinois
Population (2000) :
9841
Housing Units (2000) :
3986
Land area (2000) :
4.029440 sq. miles (10.436202 sq. km)
Water area (2000) :
0.021109 sq. miles (0.054671 sq. km)
Total area (2000) :
4.050549 sq. miles (10.490873 sq. km)
FIPS code :
50010
Located within :
Illinois (IL), FIPS 17
Location :
40.911531 N, 90.644579 W
ZIP Codes (1990) :
61462
Note :
some ZIP codes may be omitted esp. for suburbs.