× Close Notification Window Martin County Courthouse 201 Lake Avenue Fairmont, MN 56031 Phone: (507) 432-7003 Fax: (507) 238-1913 Contact by email Court Administrator: Cathy Celander Directions Free surface lot and on-street parking available. Business Hours: Mon-Fri 8:00 a.m. - 5:00 p.m. Please note that payments cannot be accepted at our service counter after 2:30 p.m. on the last working day of the month.