Courthouses in Marengo, Iowa, the US. Courthouses locations in Marengo, Iowa. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Insurance Lawyer Real estate School All courthouses in Marengo Iowa County Juvenile Court Office Courthouse +1 319-642-5479 150 West Marion Street, Marengo, Iowa 52301 Write a review Phone Directions Iowa County Magistrate Courthouse +1 319-642-5647 901 Court Avenue, Marengo, Iowa 52301 Write a review Phone Directions