'Henry County, IA' definitions:

Henry -- U.S. County in Iowa

From: Gazetteer 2000
Name :
Henry -- U.S. County in Iowa
Population (2000) :
20336
Housing Units (2000) :
8246
Land area (2000) :
434.437309 sq. miles (1125.187417 sq. km)
Water area (2000) :
2.238354 sq. miles (5.797310 sq. km)
Total area (2000) :
436.675663 sq. miles (1130.984727 sq. km)
Located within :
Iowa (IA), FIPS 19
Location :
40.982369 N, 91.542799 W