Danville is a city in Des Moines County, Iowa, United States. The population was 927 at the time of the 2020 census. It is part of the Bu…Danville is a city in Des Moines County, Iowa, United States. The population was 927 at the time of the 2020 census. It is part of the Burlington, IA–IL Micropolitan Statistical Area. Danville was founded in 1854.