One of 114 counties in Missouri, United States. County seat: Kirksville.
One of 77 counties in Oklahoma, United States. County seat: Stilwell. Named after the Adair family of the Cherokee tribe.
One of 120 counties in Kentucky, United States. County seat: Columbia.
One of 99 counties in Iowa, United States. County seat: Greenfield.
A county of Missouri, United States. County seat: Greenfield.
A county of Georgia, United States. County seat: Trenton.