'Mount Prospect, IL' definitions:

Mount Prospect, IL -- U.S. village in Illinois

From: Gazetteer 2000
Name :
Mount Prospect, IL -- U.S. village in Illinois
Population (2000) :
56265
Housing Units (2000) :
21952
Land area (2000) :
10.205632 sq. miles (26.432464 sq. km)
Water area (2000) :
0.036391 sq. miles (0.094252 sq. km)
Total area (2000) :
10.242023 sq. miles (26.526716 sq. km)
FIPS code :
51089
Located within :
Illinois (IL), FIPS 17
Location :
42.065427 N, 87.936217 W
ZIP Codes (1990) :
60056
Note :
some ZIP codes may be omitted esp. for suburbs.