Polk County is the name of twelve counties in the United States, all except two named after president of the United States James Knox Polk:

Polk County, Arkansas Polk County, Florida Polk County, Georgia Polk County, Iowa, containing Des Moines, the state capital. Polk County, Minnesota Polk County, Missouri, named after Col. Ezekiel Polk who fought in the American Revolutionary War (grandfather of James K. Polk) Polk County, Nebraska Polk County, North Carolina, named after Col. William Polk who fought in the American Revolutionary War (first cousin once-removed of James K. Polk) Polk County, Oregon Polk County, Tennessee Polk County, Texas Polk County, Wisconsin

Other uses Polk County, a play by Zora Neale Hurston

See also Polk County Courthouse (disambiguation)