'Pittsburg, IL' definitions:

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

From: Gazetteer 2000
Name :
Pittsburg, IL -- U.S. village in Illinois
Population (2000) :
575
Housing Units (2000) :
246
Land area (2000) :
2.085080 sq. miles (5.400333 sq. km)
Water area (2000) :
0.027328 sq. miles (0.070779 sq. km)
Total area (2000) :
2.112408 sq. miles (5.471112 sq. km)
FIPS code :
60209
Located within :
Illinois (IL), FIPS 17
Location :
37.777805 N, 88.850327 W
ZIP Codes (1990) :
62974
Note :
some ZIP codes may be omitted esp. for suburbs.