County of Saline City / County Government County of Saline Visit Website 9 E. North Street Marshall, MO 65340 (660) 886-3331 (660) 886-2603 (fax) http://www.salinecountymo.org/ About Map About The present-day Saline County Courthouse structure was built in 1882. It is located in the central square in the county seat of Marshall, MO. What's Nearby? Distance: 5 10 15 20 25 50 mi.