Koss is located in Lake Township, 4.9 miles (7.9 km) west-southwest of Stephenson.

[5] The Wisconsin and Michigan Railroad relocated its business office to Koss in 1897 because of its importance as a lumber town.

In the 1940s, the Duffrin mill was sawing 2,000 to 3,000 board feet of lumber a day from deadhead logs harvested from the Menominee River.

[18] Marinette and Menominee counties jointly purchased the abandoned railroad bridge south of Koss in July 1938 for $1,250 and converted it to single-lane road use.

[21] The Koss Bridge has served as the starting point for an annual canoe race held on the Menominee River.