Courthouses in Atlantic, Iowa, the US. Courthouses locations in Atlantic, Iowa. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Lawyer Real estate School Travel All courthouses in Atlantic Cass County Local Food Courthouse +1 712-243-4570 Atlantic, Atlantic, Iowa 50022 Write a review Phone Website Directions Cass County Magistrate Office Courthouse +1 712-243-3815 5 West 7th Street # D, Atlantic, Iowa 50022 Write a review Phone Directions