'Mercer County, WV' definitions:

Mercer -- U.S. County in West Virginia

From: Gazetteer 2000
Name :
Mercer -- U.S. County in West Virginia
Population (2000) :
62980
Housing Units (2000) :
30143
Land area (2000) :
420.428274 sq. miles (1088.904184 sq. km)
Water area (2000) :
0.257237 sq. miles (0.666240 sq. km)
Total area (2000) :
420.685511 sq. miles (1089.570424 sq. km)
Located within :
West Virginia (WV), FIPS 54
Location :
37.347449 N, 81.155239 W