| Official Name: | Harmon, North Dakota |
| Settlement Type: | Census-designated place |
| Pushpin Map: | North Dakota |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | North Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Morton |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 4.06 |
| Area Land Km2: | 4.06 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 1.57 |
| Area Land Sq Mi: | 1.57 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 259 |
| Population Density Km2: | 63.81 |
| Population Density Sq Mi: | 165.28 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1709 |
| Coordinates: | 46.9553°N -100.9569°W |
| Area Code: | 701 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2584345 |
Harmon is a census-designated place (CDP) and unincorporated community in Morton County, North Dakota, United States near North Dakota Highway 1806. It is ten miles north of Mandan and is within Mandan Public Schools district.[2] The nearby eponymous Harmon Lake Recreation Area also uses a Mandan address.[3]
The town was 'sited' on July 23, 1913, by Willis T. McConnell and named for two bachelor brothers, George and H.H. Harmon. The town went into decline during the Depression in the 1930s and virtually disappeared. The original cemetery is still in use. On January 15, 1951, two Northern Pacific freight trains collided outside of town.[4] The town has repopulated in the 20th century.[4]
Harmon's population was 259 as of the 2020 census,[5] the year in which it became a CDP.[6]