Prehistoric cultural affiliation(s) include Late Woodland, Mississippi Basin Woodland and Eastern Archaic Tradition dating back to 8999 BC.
The famous person Edward Langworthy is associated with one of more of the Dubuque County historic places.
Some of the country's most noteable architects helped create the Dubuque County places including Edwin E. Abbott, Byrne & Soul, J.H. Bowen, Schnell Architects, Lawrence Buck, Frederick C. Burdt, Heer, Fridolin Joseph, Sr., F.J. Heer Jr., Wyman A. Phelps and Thos.T. Garkeek. Prominent architectural styles found in Dubuque Country are Late Victorian, Greek Revival and Late Victorian.