Beaconsfield is a city in Ringgold County, Iowa, United States. The population was 15 in the 2020 census, unchanged from 2010 and an increase from 11 in 2000. In the 2000 census Beaconsfield was the least populated incorporated city in Iowa; with the increase in the 2020 census, it is now the second smallest, after Le Roy.

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.