Gray -- U.S. County in Kansas Population (2000): 5904 Housing Units (2000): 2181 Land area (2000): 868.900957 sq. miles (2250.443051 sq. km) Water area (2000): 0.439887 sq. miles (1.139302 sq. km) Total area (2000): 869.340844 sq. miles (2251.582353 sq. km) Located within: Kansas (KS), FIPS 20 Location: 37.722709 N, 100.415469 W Headwords: Gray Gray, KS Gray County Gray County, KS