'Shelby County, IA' definitions:

Shelby -- U.S. County in Iowa

From: Gazetteer 2000
Name :
Shelby -- U.S. County in Iowa
Population (2000) :
13173
Housing Units (2000) :
5459
Land area (2000) :
590.830306 sq. miles (1530.243402 sq. km)
Water area (2000) :
0.536999 sq. miles (1.390822 sq. km)
Total area (2000) :
591.367305 sq. miles (1531.634224 sq. km)
Located within :
Iowa (IA), FIPS 19
Location :
41.681668 N, 95.318339 W