Dubuque County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 99,266, making it the eighth-most populous county in Iowa. The county seat is Dubuque. The county is named for Julien Dubuque, the first European settler of Iowa.
Dubu.que County is a county located in the U.S. state of Iowa. As of the 2020 census the population was 99,266, making it the eighth-most populous county in Iowa The county seat is Dubuque. The county is named for Julien Dub.uque, the first European settler of Iowa