'Westchester' definitions:

Westchester, FL -- U.S. Census Designated Place in Florida

From: Gazetteer 2000
Name :
Westchester, FL -- U.S. Census Designated Place in Florida
Population (2000) :
30271
Housing Units (2000) :
9938
Land area (2000) :
4.014753 sq. miles (10.398162 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
4.014753 sq. miles (10.398162 sq. km)
FIPS code :
76075
Located within :
Florida (FL), FIPS 12
Location :
25.746978 N, 80.336873 W
Note :
some ZIP codes may be omitted esp. for suburbs.

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.

Westchester -- U.S. County in New York

From: Gazetteer 2000
Name :
Westchester -- U.S. County in New York
Population (2000) :
923459
Housing Units (2000) :
349445
Land area (2000) :
432.824421 sq. miles (1121.010057 sq. km)
Water area (2000) :
67.259818 sq. miles (174.202122 sq. km)
Total area (2000) :
500.084239 sq. miles (1295.212179 sq. km)
Located within :
New York (NY), FIPS 36
Location :
41.057167 N, 73.794013 W