Pennington County Justice Center 141 Main Ave S Thief River Falls, MN 56701 Phone: (218) 684-7000 Fax: (218) 681-0907 Jury Line: (218) 684-7008 Contact by Email Court Administrator: Kathy Narlock × Close Notification Window Directions Free surface lot and on-street parking available. Business Hours: Mon-Fri 8 a.m.-4:30 p.m.