'Clayton County, IA' definitions:
Clayton -- U.S. County in Iowa
From: Gazetteer 2000
Name :
Clayton -- U.S. County in Iowa
Population (2000) :
18678
Housing Units (2000) :
8619
Land area (2000) :
778.807292 sq. miles (2017.101541 sq. km)
Water area (2000) :
14.003998 sq. miles (36.270186 sq. km)
Total area (2000) :
792.811290 sq. miles (2053.371727 sq. km)
Located within :
Iowa (IA), FIPS 19
Location :
42.852007 N, 91.320308 W