'Springfield, IL' definitions:

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

From: Gazetteer 2000
Name :
Springfield, IL -- U.S. city in Illinois
Population (2000) :
111454
Housing Units (2000) :
53733
Land area (2000) :
54.000814 sq. miles (139.861459 sq. km)
Water area (2000) :
6.307268 sq. miles (16.335748 sq. km)
Total area (2000) :
60.308082 sq. miles (156.197207 sq. km)
FIPS code :
72000
Located within :
Illinois (IL), FIPS 17
Location :
39.783250 N, 89.650373 W
ZIP Codes (1990) :
62701
Note :
some ZIP codes may be omitted esp. for suburbs.