One of 99 counties in Iowa, United States. County seat: Greenfield.
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 114 counties in Missouri, United States. County seat: Kirksville.
A county of Iowa, United States. County seat: Garner.
A county of Tennessee, United States. County seat: Sneedville.
A county of Mississippi, United States. County seat: Bay St. Louis.
A county of Maine, United States. County seat: Ellsworth.
A county of West Virginia, United States. County seat: New Cumberland.
A county of Kentucky, United States. County seat: Hawesville.
A county of Indiana, United States. County seat: Greenfield.
A county of Illinois, United States. County seat: Carthage.
A county of Georgia, United States. County seat: Sparta.
A county of Ohio, United States. County seat: Findlay.