Cass County Contact Information Area Code 712    Zip Code 50022 Assessor 243-2005 Attorney 243-4504 Auditor 243-4570 Bridge Garage 243-2892 Clerk of Court 243-2105 Conservation Department 243-6665 Emergency Management 243-1500 Engineer 243-2442 Extension Services 243-1132 General Assistance 243-4424 Judge's Office 243-3452 Human Services 243-4401 Magistrate 243-3815 Maintenance Garage 243-3842 Mental Health 243-4424 Recorder 243-1692 Sanitary Landfill 243-1991 Sheriff's Office 243-2206 Supervisors 243-6661 Treasurer 243-5503 Veterans Affairs 243-6662 Wells/Water Permits  641-747-8320 Zoning 243-2442    Anita Atlantic Cumberland Griswold Lewis Massena Marne Wiota