'Irwin, IA' definitions:

Irwin, IA -- U.S. city in Iowa

From: Gazetteer 2000
Name :
Irwin, IA -- U.S. city in Iowa
Population (2000) :
372
Housing Units (2000) :
180
Land area (2000) :
0.595739 sq. miles (1.542956 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
0.595739 sq. miles (1.542956 sq. km)
FIPS code :
39000
Located within :
Iowa (IA), FIPS 19
Location :
41.790449 N, 95.207341 W
ZIP Codes (1990) :
51446
Note :
some ZIP codes may be omitted esp. for suburbs.