Dubuque Iowa Zip Code Wall Map (Red Line Style) by MarketMAPS 52001 Zip Code (Dubuque, Iowa) Profile homes, apartments Dubuque County, IA Zip Code Wall Map Red Line Style by MarketMAPS Best Places to Live in Dubuque (zip 52002), Iowa Dubuque County, Iowa Zip Code Map: Includes Cascade, Center Dubuque County, Iowa Zip Code Map: Includes Cascade, Center County Map Books of Iowa Dubuque, Iowa ZIP Code Map Updated August 2020 Dubuque County Map, Iowa