Mountrail County, North Dakota Demographics 2026
Mountrail County, North Dakota has a population of 9,507, the 16th most populous county in North Dakota. The median household income is $80,717 and the median home value is $232,700. The poverty rate is 14.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Mountrail County Quick Facts
How Mountrail County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 9,567 | 9,507 | -0.6% |
| Median household income | $81,292 | $80,717 | -0.7% |
| Median home value | $222,200 | $232,700 | +4.7% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 32 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Mountrail County
Explore North Dakota Rankings
Population Overview
Mountrail County is located in North Dakota with a total population of 9,507. It is the 16th most populous county out of 53 in North Dakota. The county encompasses 7 Census-designated places.
Age Demographics
The median age in Mountrail County is 35.4 years. This is 1% lower than the state median of 35.9 years. With 29.0% of the population under 18, Mountrail County has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Mountrail County is $80,717. This is 5% higher than the state median of $76,657. It is also about the same as the national median of $80,734. The poverty rate stands at 14.5%. This is 34% higher than the state poverty rate of 10.8%. The unemployment rate is 1.1%. This is 61% lower than the state rate of 2.8%. The median home value is $232,700. Housing costs are 7% lower than the state median of $249,900. With a home-value-to-income ratio of just 2.9x, Mountrail County is one of the most affordable housing markets in the area. 61.6% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 62.8%.
Race & Ethnicity
The largest racial or ethnic group in Mountrail County is White (non-Hispanic), making up 56.3% of the population. Hispanic or Latino residents account for 8.6%. The Hispanic or Latino population is significantly higher than the state average (8.6% vs 4.7%). The Asian population (0.6%) is well below the state average of 1.6%.
Education
22.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 30% lower than the state rate of 32.7%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 88.5%.
Data Sources & Methodology
All figures for Mountrail County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against North Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Mountrail County, North Dakota?
Mountrail County has a population of 9,507, making it the 16th most populous county in North Dakota.
What is the median income in Mountrail County?
The median household income in Mountrail County is $80,717 with a poverty rate of 14.5%.
How many cities are in Mountrail County, North Dakota?
Mountrail County contains 7 Census-designated places.