'Polk County, AR' definitions:

Polk -- U.S. County in Arkansas

From: Gazetteer 2000
Name :
Polk -- U.S. County in Arkansas
Population (2000) :
20229
Housing Units (2000) :
9236
Land area (2000) :
859.378766 sq. miles (2225.780691 sq. km)
Water area (2000) :
3.041186 sq. miles (7.876636 sq. km)
Total area (2000) :
862.419952 sq. miles (2233.657327 sq. km)
Located within :
Arkansas (AR), FIPS 05
Location :
34.485490 N, 94.253631 W