Dubuque is represented at the Federal level by:

Senate

U.S. Senator Chuck Grassley (Republican) 
135 Hart Senate Office Building
Washington, DC 20510 
Phone: (202) 224-3744
Website 

U.S. Senator Joni Ernst (Republican) 
825 B&C Hart Senate Office Building (temporary office until June 2015)
Washington, DC 20510 
Phone: (202) 224-3254
Website 
  
House of Representatives
 
U.S. Congressman Rod Blum (Republican) 
213 Cannon House Office Building
Washington, DC 20515
Phone: (202) 225-2911 
Website
 
Email links are provided on each legislator's website. For additional information, visit the Federal Legislative Branch website.