Courthouses in Linn, Missouri, the US. Courthouses locations in Linn, Missouri. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Real estate School All courthouses in Linn Osage County Circuit Court Courthouse +1 573-897-3114 106 East Main Street, Linn, Missouri 65051 Write a review Phone Website Directions