Courthouses in Mount Vernon, New York, the US. Courthouses locations in Mount Vernon, New York. 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 Mount Vernon Mt Vernon City Office Courthouse +1 914-665-2460 100 North 3rd Avenue, Mount Vernon, New York 10550 Write a review Phone Website Directions