Mount Ayr is a city in Ringgold County, Iowa, United States. The population was 1,988 at the time of the 2020 census. It is the county seat of Ringgold County. Mount Ayr is a rural community in southwestern Iowa, 22 miles west of Interstate 35 on State Highway 2. Mount Ayr was founded in 1875 and the community was named in honor of poet Robert Burns’ birthplace in Ayr, Scotland. The “mount” was added to indicate its location on the highest point of land in the area.

Ringgold County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 4,663, making it the Iowa county with the second-smallest population. The county seat is Mount Ayr. The county is named after Maj. Samuel Ringgold, a hero of the Battle of Palo Alto fought in May 1846, during the Mexican–American War. It is one of the 26 Iowa counties with a name that is unique across the nation.