'Columbia County, AR' definitions:

Columbia -- U.S. County in Arkansas

From: Gazetteer 2000
Name :
Columbia -- U.S. County in Arkansas
Population (2000) :
25603
Housing Units (2000) :
11566
Land area (2000) :
766.113922 sq. miles (1984.225864 sq. km)
Water area (2000) :
0.747300 sq. miles (1.935498 sq. km)
Total area (2000) :
766.861222 sq. miles (1986.161362 sq. km)
Located within :
Arkansas (AR), FIPS 05
Location :
33.249422 N, 93.229778 W