The Dubuque County Courthouse is located at 720 Central Avenue, between 7th and 8th Streets, in Dubuque, Iowa. The current structure was built in 1891 to replace an earlier building constructed in 1839. These are believed to be the only two structures to house the county courts and administrative offices. The courthouse houses several county government including the county auditor, treasurer, attorney, and facilities for the Iowa District Court for Dubuque County.