'Clay County, KS' definitions:

Clay -- U.S. County in Kansas

From: Gazetteer 2000
Name :
Clay -- U.S. County in Kansas
Population (2000) :
8822
Housing Units (2000) :
4084
Land area (2000) :
643.841746 sq. miles (1667.542397 sq. km)
Water area (2000) :
11.599568 sq. miles (30.042743 sq. km)
Total area (2000) :
655.441314 sq. miles (1697.585140 sq. km)
Located within :
Kansas (KS), FIPS 20
Location :
39.357193 N, 97.146911 W