'Clark County, MO' definitions:
Clark -- U.S. County in Missouri
From: Gazetteer 2000
Name :
Clark -- U.S. County in Missouri
Population (2000) :
7416
Housing Units (2000) :
3483
Land area (2000) :
507.310944 sq. miles (1313.929257 sq. km)
Water area (2000) :
4.588882 sq. miles (11.885150 sq. km)
Total area (2000) :
511.899826 sq. miles (1325.814407 sq. km)
Located within :
Missouri (MO), FIPS 29
Location :
40.407943 N, 91.729061 W