Mass City is located in Greenland Township along M-26, 13.5 miles (21.7 km) southeast of the village of Ontonagon.

[4] Mass City was first settled in 1848 by Noel Johnson, an escaped slave from Missouri who discovered copper in the area; Johnson later sold the copper deposits to the Mass Mining Company.

A post office opened in Mass City on June 15, 1899; Christ P. Anderson was the first postmaster.

[5] The small town is located within Greenland Township, Ontonagon County, in the foothills of the Porcupine Mountains.

It is home to an abundance of natural forestry and wildlife able to be explored via the Courtney Lake/Old Grade Ski Trail which runs through parts of the Ottawa National Forest.