Courthouses in Montesano, Washington, the US. Courthouses locations in Montesano, Washington. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Insurance Lawyer Real estate School Travel All courthouses in Montesano Montesano Municipal Court Courthouse +1 360-249-4245 112 North Main Street #2, Montesano, Washington 98563 Write a review Phone Website Directions