Usa-Places.com has listed approx 10 State government offices in Mason City. Some of the Top rated State government offices in Mason City are- Iowa Department of Human Services, Iowa Lottery - Mason City Office, Mason City Child Support Recovery Unit, Iowa Vocational Rehabilitation Service, Mason City Clerk of Court, Iowa Department of Natural Resources - Environmental Services Field Office 2, Cerro Gordo County Clerk of Court, Iowa DOT Mason City Maintenance Garage, Narcotics Enforcement Division & County Traffic Bureau.