'Clay County, SD' definitions:

Clay -- U.S. County in South Dakota

From: Gazetteer 2000
Name :
Clay -- U.S. County in South Dakota
Population (2000) :
13537
Housing Units (2000) :
5438
Land area (2000) :
411.600555 sq. miles (1066.040497 sq. km)
Water area (2000) :
5.099059 sq. miles (13.206502 sq. km)
Total area (2000) :
416.699614 sq. miles (1079.246999 sq. km)
Located within :
South Dakota (SD), FIPS 46
Location :
42.888221 N, 96.977391 W