Harmon, North Dakota

Harmon, North Dakota
CDP & Unincorporated community
Street in Harmon (July 2009)
Street in Harmon (July 2009)
Interactive map of Harmon, North Dakota
Harmon is located in North Dakota
Harmon
Harmon
Location within North Dakota
Coordinates: 46°57′16″N 100°57′25″W / 46.9544°N 100.9570°W / 46.9544; -100.9570
CountryUnited States
StateNorth Dakota
CountyMorton
Platted and sitedJuly 23, 1913
Founded byWillis T. McConnell
Named afterGeorge and H.H. Harmon
Area
[1]
 • Total
1.567 sq mi (4.059 km2)
 • Land1.567 sq mi (4.059 km2)
 • Water0 sq mi (0.000 km2)  0.00%
Elevation
[2]
1,709 ft (521 m)
Population
 (2020)[3]
 • Total
259
 • Estimate 
(2025)[4]
199
 • Density165/sq mi (63.8/km2)
Time zoneUTC–6 (Central (CST))
 • Summer (DST)UTC–5 (CDT)
ZIP Code
58554
Area code701
FIPS code38-35500
GNIS feature ID2584345[2]
HighwaysCR 140, ND 1806

Harmon is a census-designated place (CDP) and unincorporated community in Morton County, North Dakota, United States. The population was 259 as of the 2020 census,[3] and was estimated at 199 in 2025.[4] It is 9.5 miles (15.3 km) north of Mandan.

History

Harmon was platted and 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. The town has repopulated in the 20th century.[5]

Geography

Harmon is east of North Dakota Highway 1806, 9.5 miles (15 km) north of Mandan. The original townsite is along the western edge of the Missouri River floodplain, with current development sited in the western part of the CDP, above the river bluffs. Harmon Lake Recreation Area is on the west side of Highway 1806, on a reservoir built on Otter Creek, a tributary of the Missouri.[6]

According to the United States Census Bureau, the CDP has a total area of 1.567 square miles (4.06 km2), all land.[1]

Demographics

Historical population
CensusPop.Note%±
2010145—
202025978.6%
2025 (est.)199[4]−23.2%
U.S. Decennial Census[7]
2020 Census[3]

As of the 2024 American Community Survey, there were 68 estimated households in Harmon with an average of 2.91 persons per household. The CDP has a median household income of $113,500. Approximately 0.0% of the CDP's population lives at or below the poverty line. Harmon has an estimated 81.5% employment rate, with 33.6% of the population holding a bachelor's degree or higher and 100.0% holding a high school diploma.[8] There were 68 housing units at an average density of 43.40 per square mile (16.8/km2).

The top five reported languages (people were allowed to report up to two languages, thus the figures will generally add to more than 100%) were English (100.0%), Spanish (0.0%), Indo-European (0.0%), Asian and Pacific Islander (0.0%), and Other (0.0%).

The median age in the CDP was 33.3 years.

Harmon, North Dakota – racial and ethnic composition
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
Race / ethnicity (NH = non-Hispanic) Pop. 2010[9] Pop. 2020[10] % 2010 % 2020
White alone (NH) 144 241 99.31% 93.05%
Black or African American alone (NH) 0 0 0.00% 0.00%
Native American or Alaska Native alone (NH) 1 3 0.69% 1.16%
Asian alone (NH) 0 3 0.00% 1.16%
Pacific Islander alone (NH) 0 0 0.00% 0.00%
Other race alone (NH) 0 0 0.00% 0.00%
Mixed race or multiracial (NH) 0 4 0.00% 1.54%
Hispanic or Latino (any race) 0 8 0.00% 3.09%
Total 145 259 100.00% 100.00%

2020 census

As of the 2020 census, there were 259 people, 75 households, and 66 families residing in the CDP.[11] The population density was 165.28 inhabitants per square mile (63.81/km2). There were 83 housing units at an average density of 52.97 per square mile (20.45/km2). The racial makeup of the CDP was 93.05% White, 0.00% African American, 1.16% Native American, 1.16% Asian, 0.00% Pacific Islander, 2.70% from some other races and 1.93% from two or more races. Hispanic or Latino people of any race were 3.09% of the population.[12]

2010 census

As of the 2010 census, there were 145 people, 48 households, and 39 families residing in the CDP.[13] The population density was 92.53 inhabitants per square mile (35.73/km2). There were 49 housing units at an average density of 31.27 per square mile (12.07/km2). The racial makeup of the CDP was 99.31% White and 0.69% Native American.

Education

The Mandan Public School District 1 (also known as Morton County District #1) was formally organized on April 23, 1881. Reorganization in 1969.

The area is served by the Mandan Public School District 1.[14] It operates the Mandan School. In the 2025-26 academic year, the district reported a total of 4,452 students.[15]

References

  1. 1 2 "2025 U.S. Gazetteer Files". United States Census Bureau. Retrieved August 11, 2026.
  2. 1 2 U.S. Geological Survey Geographic Names Information System: Harmon, North Dakota
  3. 1 2 3 "Explore Census Data". United States Census Bureau. Retrieved August 11, 2026.
  4. 1 2 3 "City and Town Population Totals: 2020-2025". United States Census Bureau. Retrieved August 11, 2026.
  5. ↑ White, Dustin (March 12, 2017). "Rediscovering the Town of Harmon, ND". Midwestern Scot. Retrieved January 31, 2022.
  6. ↑ "Harmon Lake Recreation Area". Morton County, North Dakota. Retrieved January 31, 2022.
  7. ↑ "Decennial Census of Population and Housing". www.census.gov. United States Census Bureau. Retrieved June 4, 2015.
  8. ↑ "U.S. Census Bureau QuickFacts: Harmon CDP, North Dakota". www.census.gov. Retrieved August 4, 2026.
  9. ↑ "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Harmon CDP, North Dakota". United States Census Bureau. Retrieved August 11, 2026.
  10. ↑ "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Harmon CDP, North Dakota". United States Census Bureau. Retrieved August 11, 2026.
  11. ↑ "US Census Bureau, Table P16: Household Type". United States Census Bureau. Retrieved August 11, 2026.
  12. ↑ "How many people live in Harmon CDP, North Dakota". USA Today. Retrieved August 11, 2026.
  13. ↑ "North Dakota: 2010 Census of Population and Housing" (PDF). United States Census Bureau. December 2012. p. 181 of 352. Retrieved August 11, 2026.
  14. ↑ "2020 Census - School District Reference Map: Morton County, ND" (PDF). United States Census Bureau. Retrieved August 11, 2026.
  15. ↑ "Mandan Public School District". North Dakota Information Technology. Retrieved August 11, 2026.
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