Dunkerton is a city in Black Hawk County, Iowa, United States. The population was 842 at the time of the 2020 census. It is part of the Waterloo–Cedar Falls Metropolitan Statistical Area. In 1853, two brothers, James and John Dunkerton, walked from Dubuque, Iowa, to stake out a claim of land near Lester. This claim became the town known as Lesterton, and later Dunkerton. In 1854, John died and was buried in the small cemetery, which now holds four generations of Dunkertons. James remained and built up his land. On December 25, 1854, he married Christiana Hodges. At 60 years of age, James and his eldest son, sold a portion of their land to the railroad, requesting that the railroad be extended to Iowa. This act enabled the present City of Dunkerton to be established.