County · North Dakota
Dunn County, North Dakota
Dunn County, North Dakota. Dunn County had 4,058 residents in 2025 by the Census Bureau's estimate, down 1.0% since 2020, while North Dakota grew 2.6%. It holds 5 places (4 cities, villages and boroughs and 1 census-designated) and 1 census tract. GEOID 38025.
Dunn County is one of the 3 counties of the Dickinson, ND micropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
4,058
Census Bureau estimate (no margin published)
2020 Census count: 4,095 · ACS 2020-2024: 4,040
Median household income
$97,689
±$5,164 (90% margin)
North Dakota: $76,657
Median home value
$275,000
±$55,020 (90% margin)
North Dakota: $249,900
Median gross rent
$922
±$71 (90% margin)
North Dakota: $954
How many people live in Dunn County, and is it growing?
The 2020 Census counted 4,095 residents in Dunn County. The Census Bureau estimates 4,058 for July 1, 2025, down 1.0% since 2020, while North Dakota grew 2.6%. The 2020-2024 American Community Survey puts the population at 4,040 over 2,008 square miles of land.
| Measure | Dunn County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,040 | 784,841 | −355 |
| Households | 1,571±79 | 331,063 | −121 |
| Average household size | 2.51±0.13 | 2.28 | no clear change |
| Housing units | 2,088±71 | 377,281 | −533 |
Dunn County's population since 2000
From 3,600 in 2000 to 4,058 in 2025: up 12.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Dunn County?
Dunn County holds 5 places: 4 cities, villages and boroughs (incorporated places) and 1 census-designated place. The largest is Killdeer with 912 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Killdeer | 939 | $89,750 |
|---|---|---|
| Halliday | 241 | $51,154 |
| Dunn Center | 227 | $93,750 |
| DodgeGEOID 3819820 | 89 | not published |
| ManningGEOID 3850220 | 47 | $190,893 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Dunn County?
The median resident of Dunn County is 40.4 years old; 26.1% are under 18 and 19.5% are 65 or older. The largest group is non-Hispanic white residents at 78.5%, then non-Hispanic American Indian and Alaska Native residents at 9.5%. 3.0% of residents were born outside the United States.
| Measure | Dunn County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median age | 40.4±1.4 | 35.9 | no clear change |
| Under 18 years | 26.1%±1.5 pts | 23.5% | – |
| 65 years and over | 19.5%±1.7 pts | 16.5% | – |
| Hispanic or Latino (any race) | 4.5%±0.4 pts | 4.7% | – |
| White alone, not Hispanic | 78.5%±1.6 pts | 81.7% | −5.0 pts |
| Black or African American alone, not Hispanic | 0.1%±0.1 pts | 3.3% | – |
| Asian alone, not Hispanic | 0.9%±0.6 pts | 1.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 9.5%±0.9 pts | 4.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 5.7%±1.6 pts | 4.0% | – |
| Some other race alone, not Hispanic | 0.7%±0.8 pts | 0.3% | – |
| Born outside the United States | 3.0%±1.2 pts | 4.7% | no clear change |
| Speak a language other than English at home (age 5+) | 9.7%±2.3 pts | 6.7% | – |
| Civilian veterans (age 18+) | 8.9%±1.9 pts | 7.1% | – |
| With a disability | 12.2%±2.5 pts | 12.0% | – |
| No health insurance coverage | 14.8%±3.8 pts | 6.5% | no clear change |
| High school graduate or higher (age 25+) | 93.8%±1.5 pts | 94.0% | – |
| Bachelor's degree or higher (age 25+) | 25.2%±4.0 pts | 32.7% | no clear change |
| Graduate or professional degree (age 25+) | 7.6%±2.2 pts | 9.7% | – |
| Moved from another state in the past year | 1.5%±0.7 pts | 4.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Dunn County earn?
Half of Dunn County's 1,571 households earn less than $97,689 a year (±$5,164), against $76,657 in North Dakota. In 2015-2019 it was $94,418 in 2024 dollars; the margins of error cannot tell the two periods apart. 7.4% of residents live below the poverty line.
| Measure | Dunn County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $97,689±$5,164 | $76,657 | no clear change |
| Mean household income | $138,082±$15,249 | $101,793 | – |
| Per capita income | $54,172±$5,523 | $43,389 | no clear change |
| People below the poverty line | 7.4%±3.0 pts | 10.8% | no clear change |
| Children under 18 below the poverty line | 11.1%±7.2 pts | 11.1% | no clear change |
| Households receiving SNAP | 3.7%±1.8 pts | 6.6% | – |
| Households with a broadband subscription | 89.5%±2.7 pts | 88.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Dunn County?
Owners occupy 74.3% of Dunn County's occupied homes and renters 25.7%. The median owner-occupied home is valued at $275,000 by its owner (±$55,020). The median renter pays $922 a month including utilities, and 9.7% of renters pay 35% or more of their income on rent.
| Measure | Dunn County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $275,000±$55,020 | $249,900 | no clear change |
| Median gross rent | $922±$71 | $954 | −$347 |
| Renters paying 35% or more of income on rent | 9.7%±6.0 pts | 31.1% | −15.1 pts |
| Median monthly owner costs, with a mortgage | $1,563±$340 | $1,762 | – |
| Owner-occupied homes | 74.3%±4.9 pts | 62.9% | no clear change |
| Housing units | 2,088±71 | 377,281 | −533 |
| Homeowner vacancy rate | 0.7%±1.1 pts | 1.2% | – |
| Rental vacancy rate | 8.6%±6.0 pts | 8.3% | – |
| Single-family detached homes | 67.7%±4.1 pts | 56.7% | – |
| Mobile homes | 23.2%±3.7 pts | 6.6% | – |
| Built 2020 or later | 0.4%±0.3 pts | 1.8% | – |
| Built 1939 or earlier | 11.0%±2.5 pts | 11.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Dunn County building?
Builders took permits for 18 new housing units across Dunn County in 2025 (18 single-family), 4.4 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Dunn County get to work?
66.3% of Dunn County's workers drive alone and 17.0% work from home. The average trip to work takes 27.6 minutes. The unemployment rate in 2020-2024 averaged 3.4%.
| Measure | Dunn County | North Dakota | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.6%±3.3 pts | 68.6% | – |
| Unemployment rate | 3.4%±1.6 pts | 2.8% | no clear change |
| Drove alone to work | 66.3%±6.1 pts | 77.9% | – |
| Carpooled | 9.8%±3.3 pts | 8.8% | – |
| Public transportation | 0.1%±0.2 pts | 0.3% | – |
| Walked | 4.0%±1.9 pts | 3.2% | – |
| Worked from home | 17.0%±3.9 pts | 8.1% | +6.9 pts |
| Mean travel time to work | 27.6 min±3.3 | 17.9 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Dunn County's census tracts?
Dunn County is a single census tract.
| Tract 962238025962200 | 4,040 | $97,689 |
|---|
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Dunn County compare with North Dakota's other counties?
| Measure | Rank |
|---|---|
| Population | 26th of 53 |
| Growth 2020-2025 | 26th of 53 |
| Residents per square mile | 44th of 53 |
| Median household income | 1st of 53 |
| Median home value | 6th of 53 |
| Median gross rent | 12th of 53 |
| Poverty rate | 48th of 53 |
| Bachelor's degree or higher | 27th of 53 |
| Median age | 36th of 53 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Dunn County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.