Des Moines County

Des Moines County is located in the U.S. state of Iowa. As of the 2020 census, the population was 38,910, and was estimated to be 38,077 in 2025. The county seat and largest city is Burlington. It is one of Iowa's two original counties along with Dubuque County; both were organized by the Michigan Territorial legislature in 1834. Des Moines County is part of the Burlington micropolitan statistical area.