'Westchester, IL' definitions:

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

From: Gazetteer 2000
Name :
Westchester, IL -- U.S. village in Illinois
Population (2000) :
16824
Housing Units (2000) :
7123
Land area (2000) :
3.195344 sq. miles (8.275903 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
3.195344 sq. miles (8.275903 sq. km)
FIPS code :
80047
Located within :
Illinois (IL), FIPS 17
Location :
41.853890 N, 87.883712 W
ZIP Codes (1990) :
60154
Note :
some ZIP codes may be omitted esp. for suburbs.