Residents in Mason City, Iowa, are represented at the federal level by:
Senator Chuck Grassley (Republican)
U.S. Senate
135 Hart Senate Office Building
Washington, DC 20510
Phone: (202) 224-3744
Fax: (202) 224-6020
Website
Senator Joni Ernst (Republican)
U.S. Senate
260 Russell Senate Office Building
Washington, DC 20510
Phone: (202) 224-3254
Fax: (202) 224-9369
Website
Federal Representative
Representative Ashley Hinson (Republican – District 2)
U.S. House of Representatives
1717 Longworth House Office Building
Washington, DC 20515
Phone: (202) 225-2911
Website