Courthouses in Union, Missouri, the US. Courthouses locations in Union, Missouri. 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 University All courthouses in Union Circuit Court Judge Courthouse +1 636-583-6306 401 East Main Street, Union, Missouri 63084 Write a review Phone Directions Franklin County Courthouse 400 East Locust Street, Union, Missouri 63084 Write a review Phone Website Directions Union Municipal Court Clerk Courthouse +1 636-583-8436 500 East Locust Street, Union, Missouri 63084 Write a review Phone Website Directions