| Official Name: | Mass City, Michigan |
| Settlement Type: | Census-designated place (CDP) & unincorporated community |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | right |
| Pushpin Label: | Mass City |
| Pushpin Map Caption: | Location within the state of Michigan |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Ontonagon |
| Subdivision Type3: | Township |
| Subdivision Name3: | Greenland |
| Established Title: | Settled |
| Established Date: | 1848 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1056 |
| Coordinates: | 46.7639°N -89.0864°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 49948 |
| Area Code: | 906 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 631722 |
| Population As Of: | 2020 |
| Population Total: | 148 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.39 |
| Area Total Sq Mi: | 0.54 |
| Area Land Km2: | 1.39 |
| Area Water Km2: | 0.00 |
| Area Land Sq Mi: | 0.54 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 275.09 |
| Population Density Km2: | 106.14 |
Mass City (also known as Mass) is an unincorporated community in Ontonagon County in the U.S. state of Michigan. Mass City is located in Greenland Township along M-26, 13.5miles southeast of the village of Ontonagon.[2] Mass City has its own post office with the 49948 ZIP Code .[3]
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. Mass City was formally organized in 1855 and named for the mass copper mined in the area. The original site of Mass City was abandoned in 1899, when Abram and Nellie Mathews platted the current site. A post office opened in Mass City on June 15, 1899; Christ P. Anderson was the first postmaster.[4]
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.