Courthouses in Oskaloosa, Iowa, the US. Courthouses locations in Oskaloosa, 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 University All courthouses in Oskaloosa Closed now Mahaska County Courthouse Courthouse +1 641-673-4940 106 South 1st Street, Oskaloosa, Iowa 52577 Write a review Phone Hours Website Directions Mahaska County Magistrate Ct Courthouse +1 641-673-3414 106 South 1st Street, Oskaloosa, Iowa 52577 Write a review Phone Website Directions