Polk County, Arkansas
Arkansas's location within the U.S.
|Founded||November 30, 1844|
|Named for||James K. Polk|
|• Total||862 sq mi (2,230 km2)|
|• Land||858 sq mi (2,220 km2)|
|• Water||4.8 sq mi (12 km2) 0.6%%|
| • Estimate |
|• Density||24/sq mi (9/km2)|
|Time zone||UTC−6 (Central)|
|• Summer (DST)||UTC−5 (CDT)|
Polk County is a county of the U.S. state of Arkansas. As of the 2010 census, the population was 20,662. The county seat is Mena. Polk County was founded on November 30, 1844, and named for James Polk, 11th President of the United States (1845–1849).