Mountrail County, North Dakota Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 16th-largest in North Dakota
The population of Mountrail County, North Dakota is 9,567 as of the 2023 American Community Survey, making it the 16th-largest county in North Dakota. The median household income is $81,292, the median home value is $222,200, and the median age is 35.1.
The population of Mountrail County has grown 22.9% since 2010 (7,708 → 9,474), a +1.48% annualized rate.
9,567
Population
+1.48%
Annual growth
5
People / sq mi
$81,292
Median Income
$222,200
Median Home Value
Mountrail County covers 1,825 sq mi of land at 5.2 people per square mile.
About Mountrail County, ND
Homeownership is the standout figure in Mountrail County: 60.0% of homes are owner-occupied, lower than the national rate. Mountrail County is a county in North Dakota with a population of 9,567. It ranks #16 among counties in North Dakota by population.
Median household income is $81,292, near the US median of $78,538. The poverty rate is 10.7%, below the national 12.4%. Homes carry a median value of $222,200, with typical rent around $864.
22.4% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. Remote work is on the lower side here, at 4.5%, below the national 14.0%, and the average commute runs about 20 minutes each way.
Mountrail County Population History (2010-2024)
The county of Mountrail County had a population of 7,708 in 2010 and 9,474 in 2024, a 22.9% growth over 14 years. The peak was 10,507 in 2019. Average annual growth rate: 1.57%.
9,474
Population (2024)
7,708
Population (2010)
10,507
Peak (2019)
1.57%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 7,708 |
| 2011 | 8,102 |
| 2012 | 8,739 |
| 2013 | 9,342 |
| 2014 | 9,755 |
| 2015 | 10,311 |
| 2016 | 10,239 |
| 2017 | 10,273 |
| 2018 | 10,217 |
| 2019 | 10,507 |
| 2020 | 9,803 |
| 2021 | 9,578 |
| 2022 | 9,255 |
| 2023 | 9,427 |
| 2024 | 9,474 |
Race & Ethnicity
| White | 59.8% |
| Black or African American | 2.0% |
| Asian | 1.2% |
| Hispanic or Latino (any race) | 31.8% |
| Two or More Races | 0.0% |
Age & Sex
35.1
Median Age
48.0%
Female
52.0%
Male
13.1%
Age 65+
Age Distribution
Children (under 15): 24.4% · Seniors (65+): 13.1%
Income & Poverty
| Median household income | $81,292+$5,343 vs state |
| Mean household income | $102,926 |
| Per-capita income | $41,281 |
| Poverty rate | 10.7%+4.5% vs state |
| Unemployment rate | 1.9% |
| Employment-to-population | 61.5% |
Top Industries by Employment
The largest employment sector in Mountrail County is professional & business services, accounting for 19.3% of workers.
How residents commute
0.0%
Drive alone
3.9%
Carpool
78.4%
Public transit
4.5%
Work from home
19.9 min
Avg commute
Housing
$222,200$-18,900 vs state
Median home value
$864
Median rent
60.0%
Homeownership rate
5,073
Total housing units
75.7%
Occupied
24.3%
Vacant
40.0%
Renter-occupied
Social & access
83.6%
With health insurance
93.0%
With broadband internet
38.3%
Foreign-born
5.7%
Veterans (18+)
13.9%
With a disability
88.5%
Speak language other than English at home
Education
88.6%
High School+
22.4%
Bachelor's+
Largest cities in North Dakota
Other counties in North Dakota
Part of North Dakota
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County rankings
Frequently Asked Questions
Mountrail County, North Dakota has a population of 9,567 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 16th-largest county in North Dakota. Population density is 5 people per square mile.
The population of Mountrail County has grown 22.9% since 2010 (7,708 → 9,474), a +1.48% annualized rate.
The median household income in Mountrail County, North Dakota is $81,292, with mean (average) household income of $102,926 and per-capita income of $41,281. 10.7% of residents live below the federal poverty level.
In Mountrail County, the largest racial and ethnic groups are White (59.8%), Hispanic or Latino (31.8%), Black or African American (2.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Mountrail County, North Dakota is 35.1 years. Residents are 48.0% female and 52.0% male.
The median home value in Mountrail County is $222,200 and median monthly rent is $864. 60.0% of occupied housing units are owner-occupied. The county has 5,073 total housing units, 24.3% of which are vacant.
The largest employment sector in Mountrail County, North Dakota is professional, scientific, and management services, employing 19.3% of workers. The unemployment rate is 1.9%.
Fargo is among the largest cities associated with Mountrail County, North Dakota, with a population of 129,064.
Mountrail County, ND Climate
Mountrail County, ND has an average annual temperature of 4.1°C (39°F) and receives about 441 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
4.1°C
Avg Temp
441
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -14° / 6° | 13 mm |
| February | -10° / 14° | 11 mm |
| March | -4° / 25° | 19 mm |
| April | 5° / 40° | 41 mm |
| May | 12° / 54° | 66 mm |
| June | 17° / 62° | 86 mm |
| July | 20° / 67° | 60 mm |
| August | 19° / 67° | 46 mm |
| September | 13° / 56° | 49 mm |
| October | 6° / 43° | 24 mm |
| November | -4° / 25° | 13 mm |
| December | -11° / 12° | 13 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Mountrail County, ND
The most comfortable months to visit Mountrail County, ND are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 27°C high). The coldest is January (near -20°C low). June is usually the wettest month.
Where to stay near Mountrail County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.