Population
3,667
2025
−5.4% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Sioux County, ND: population growth, jobs and income
Sioux County lost 50 residents between 2024 and 2025 (−1.3%).
Sioux County had an estimated 3,667 residents in 2025, down 5.4% (209 fewer people) since 2020. That is slower than North Dakota as a whole (+2.5%), and the 48th fastest growth of 51 counties in North Dakota.
Data as of 2025 · updated
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In the Sioux County report
One-time $99 PDF: everything on this page for Sioux County, ranked against North Dakota and the U.S., plus these figures that are not on the free page:
- Median gross rent$444/mo2020–24
- Vacant homes, incl. seasonal and second homes13.1%2020–24
- New homes permitted, last 12 months02025-10/2026-09
- Rent growth, 5 yearsIn the report
- Permits in 5+ unit buildingsIn the report
- IRS income moving in (net AGI)In the report
- Neighbouring-county comparison tableIn the report
What's inside: 5 pages
- 1 Summary, headline numbers and ranks (free preview)
- 2 Ranks and the neighbouring-county table
- 3 Migration, with IRS mover and income flows
- 4 Rent, vacant homes, permits and employers
- 5 Every source and the methods
Headline numbers
Net domestic migration
−63
2025
−17.2 per 1,000 residents
−212 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
Unemployment rate
3.0%
2025
−0.3 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
New homes permitted
0
2025
0.0 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
Median household income
$42,083
2020–24
+0.5% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
Private-sector employment
529
2023
−8.0% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
What the numbers say
Net domestic migration was negative in 2025: 63 more people moved out to other U.S. counties than moved in.
Private employers had 529 paid employees in mid-March 2023, −8.0% since 2018 (County Business Patterns).
Unemployment averaged 3.0% in 2025, 0.3 points lower than in 2019 (before the pandemic).
Builders were authorized to start 0 new homes in 2025, or 0.0 per 1,000 residents.
Median household income was $42,083 in the 2020–24 American Community Survey, +0.5% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 2,956th.
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Sioux County population by year
| Year | Population | Change |
|---|---|---|
| 2025 | 3,667 | −50 |
| 2024 | 3,717 | +76 |
| 2023 | 3,641 | −41 |
| 2022 | 3,682 | −57 |
| 2021 | 3,739 | −137 |
| 2020 | 3,876 | – |
Census Bureau population estimates, July 1 of each year.
What drove the change in Sioux County
Sioux County lost 209 people since 2020; the biggest drag was domestic migration (−212).
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | +5 | −4 | |
| International migrationfrom and to other countries | +8 | +17 | |
| Domestic migrationfrom and to other U.S. counties | −63 | −212 | |
| Census adjustmentbalancing residual | +0 | −10 | |
| Total change | −50 | −209 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
How it ranks
| Measure | In North Dakota | Among U.S. counties |
|---|---|---|
| Population growth | 48th of 51 | 2,956th of 3,107 |
| Net domestic migration per 1,000 residents | 51st of 52 | 3,033rd of 3,108 |
| Private-sector job growth | 37th of 52 | 2,705th of 3,092 |
| Median household income | 52nd of 52 | 2,991st of 3,107 |
| Lowest unemployment rate | 37th of 52 | 419th of 3,108 |
| New homes permitted per 1,000 residents | 45th of 52 | 2,841st of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
Get the county report — $99
The County Growth and Demographics Report for Sioux County, ND as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.
Add 2 neighbouring counties for $50: the Morton County and Corson County reports too, $149 for all 3.
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Neighbouring counties
Sioux County lost population faster than all 5 of its neighbouring counties (−5.4%, 2020–25).
Its median household income ($42,083, 2020–24) is lower than in all 5 of its neighbouring counties.
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Sioux County, ND This county | 3,667 | −5.4% | −17.2 | 0.0 | $42,083 |
| Morton County, ND | 34,601 | +3.8% | 5.3 | 2.9 | $79,382 |
| Corson County, SD | 3,781 | −2.8% | −8.7 | 0.0 | $46,406 |
| Emmons County, ND | 3,215 | −2.4% | 0.9 | 8.7 | $66,538 |
| Grant County, ND | 2,206 | −3.5% | −3.2 | 3.6 | $57,875 |
| Adams County, ND | 2,275 | +3.7% | 27.7 | 0.4 | $62,500 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
Questions
Is Sioux County growing?
No. Its population fell 5.4% between 2020 and 2025, about 209 fewer people (Census Bureau population estimates). North Dakota as a whole changed +2.5% over the same years. That ranks 48th of 51 counties in North Dakota for population growth.
How many people moved to Sioux County?
On net, none in 2025: about 63 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).
What is the unemployment rate in Sioux County?
It averaged 3.0% in 2025 (BLS Local Area Unemployment Statistics, annual average).
What is the population of Sioux County?
About 3,667 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
How many jobs are in Sioux County?
Private employers there had 529 paid employees in mid-March 2023, −8.0% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
What Beacon CRE covers in North Dakota
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other North Dakota county pages carry the public federal growth figures.
Sioux County data alerts
Email me when Sioux County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Sources and method
- U.S. Census Bureau, Population Estimates Program (Vintage 2025)
- U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics
- U.S. Census Bureau, Building Permits Survey
- U.S. Census Bureau, American Community Survey 5-year estimates
- U.S. Census Bureau, County Business Patterns
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.