Sioux County, North Dakota

Sioux County, North Dakota, had an estimated population of 3,667 in 2025 across 2,834 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among North Dakota's counties and nationally.

Population: 3,667; 2025 estimate
Area: 2,834 km²
Density: 1; per km²
Median income: $42,083; household, ACS 2024
Median age: 28.2; years, ACS 2024

How North Dakota's counties spread

Amenities & Infrastructure

Indicator	Value	In North Dakota	In the US
Households with Broadband2024	80.6%	48 / 53	2,700 / 3,144
Median Gross Rent2024	$444	52 / 53	3,127 / 3,137
Median Home Value2024	$85,400	52 / 53	3,054 / 3,139
Owner-Occupied Homes2024	46.6%	53 / 53	3,111 / 3,144
Vacant Homes2024	13.1%	40 / 53	1,706 / 3,144

Demography

Indicator	Value	In North Dakota	In the US
Aged 65 and Over2024	9.6%	52 / 53	3,127 / 3,144
American Indian & Alaska Native2024	82.4%	1 / 53	4 / 3,144
Asian, non-Hispanic2024	0.7%	21 / 53	1,366 / 3,144
Average Household Size2024people	3.3	1 / 53	32 / 3,144
Black, non-Hispanic2024	0.4%	24 / 53	2,534 / 3,144
Foreign-Born2024	0.7%	44 / 53	2,865 / 3,144
Hispanic or Latino2024	1.5%	42 / 53	2,867 / 3,144
Median Age2024years	28.2	53 / 53	3,118 / 3,144
Sex Ratio2024per 1,000 males	1,009	5 / 53	1,325 / 3,144
Speak a Language Other Than English2024	7.8%	10 / 53	1,161 / 3,144
Under 182024	34.0%	1 / 53	17 / 3,144
Veterans2024	5.2%	45 / 53	2,680 / 3,144
White, non-Hispanic2024	12.1%	53 / 53	3,119 / 3,144

Economy

Indicator	Value	In North Dakota	In the US
Below Poverty Line2024	43.3%	1 / 53	4 / 3,144
Households on SNAP2024	36.8%	1 / 53	14 / 3,144
Income Inequality2024index	0.531	2 / 53	67 / 3,144
Median Household Income2024	$42,083	53 / 53	3,025 / 3,143
Per Capita Income2024	$21,541	53 / 53	3,095 / 3,144
Unemployment Rate2024	17.0%	1 / 53	9 / 3,144

Education

Indicator	Value	In North Dakota	In the US
Bachelor's Degree or Higher2024	16.3%	53 / 53	2,534 / 3,144
High School or Higher2024	87.9%	51 / 53	2,043 / 3,144

Health Coverage

Indicator	Value	In North Dakota	In the US
No Health Insurance2024	21.1%	2 / 53	88 / 3,144
With a Disability2024	13.8%	18 / 53	2,209 / 3,144

Population & Density

Indicator	Value	In North Dakota	In the US
Population2025	3,667	30 / 53	2,911 / 3,144
Population Density2025/km²	1	25 / 53	2,838 / 3,144

Work & Commute

Indicator	Value	In North Dakota	In the US
Commute by Public Transit2024	1.4%	1 / 53	271 / 3,144
Households with No Vehicle2024	12.7%	1 / 53	94 / 3,144
Mean Commute Time2024minutes	17.8	32 / 53	2,775 / 3,143
Work from Home2024	7.9%	29 / 53	1,794 / 3,144

Other counties of North Dakota

Compare Sioux County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.