Here's one Dubuque Realtory who seems very internet-savvy, which might make it easier to work over distance: Dubuque Real Estate Agent - Nathan Boyes (broken link)
Here are the Chamber's relocation resources -- you should definitely get the guides they offer:
Dubuque Chamber of Commerce - Live - Relocating?
I don't know that it's totally relevant, but this is a fun site: alleged market segmentation, showing the types of people living in an area:
Prizm > Market Segmentation Research, Tools, Market Segment Research, - Market Segments, Consumer Markets, Customer Segmentation Profiling It seems pretty upbeat, and I really don't think there are as many avid hunters anywhere as it would like to believe, but it gets you thinking about what the neighbors are like, for sure!
Here's one -- don't know how good it is but might be worth playing with:
Moving to Dubuque County, Iowa - Dubuque County, Iowa relocation Iowa Relocation Information - Dubuque County, Iowa Relocation Packages - Moving to Iowa? Relocate to Iowa
Good luck! I don't think you'll be displeased. Dubuque is really going places in terms of economic growth, but seems to be retaining a lot of midwestern values along the way. Frankly, I think Cedar Rapids should be envious!