'Guernsey County, OH' definitions:

Guernsey -- U.S. County in Ohio

From: Gazetteer 2000
Name :
Guernsey -- U.S. County in Ohio
Population (2000) :
40792
Housing Units (2000) :
18771
Land area (2000) :
521.904233 sq. miles (1351.725701 sq. km)
Water area (2000) :
6.388928 sq. miles (16.547247 sq. km)
Total area (2000) :
528.293161 sq. miles (1368.272948 sq. km)
Located within :
Ohio (OH), FIPS 39
Location :
40.023052 N, 81.524643 W