Ringgold County, Iowa
Ringgold County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 4,663, and was estimated to be 4,642 in 2025, making it the second-least populous county in Iowa. The county seat and the largest city 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.