Data / Rankings / Average household size / Counties in North Dakota

Counties in North Dakota by average household size

Sioux County had the highest average household size of 53 counties in 2021, at 3.7 persons per household. McIntosh County had the lowest, at 2 persons per household. The median was 2.3 persons per household and the figure for North Dakota was 2.4 persons per household. Source: the U.S. Census Bureau.

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Highest3.7Sioux County
Lowest2McIntosh County
Median2.353 counties
North Dakota2.4History

Map of counties, 2021

Adams County: 2.2 persons per householdBarnes County: 2.1 persons per householdBenson County: 3.2 persons per householdBillings County: 2.7 persons per householdBottineau County: 2.4 persons per householdBowman County: 2.5 persons per householdBurke County: 2.4 persons per householdBurleigh County: 2.4 persons per householdCass County: 2.3 persons per householdCavalier County: 2.3 persons per householdDickey County: 2.5 persons per householdDivide County: 2.3 persons per householdDunn County: 2.7 persons per householdEddy County: 2.2 persons per householdEmmons County: 2.2 persons per householdFoster County: 2.3 persons per householdGolden Valley County: 2.4 persons per householdGrand Forks County: 2.2 persons per householdGrant County: 2.2 persons per householdGriggs County: 2.3 persons per householdHettinger County: 2.3 persons per householdKidder County: 2.3 persons per householdLaMoure County: 2.4 persons per householdLogan County: 2.3 persons per householdMcHenry County: 2.3 persons per householdMcIntosh County: 2 persons per householdMcKenzie County: 2.8 persons per householdMcLean County: 2.4 persons per householdMercer County: 2.4 persons per householdMorton County: 2.4 persons per householdMountrail County: 2.8 persons per householdNelson County: 2.3 persons per householdOliver County: 2.7 persons per householdPembina County: 2.3 persons per householdPierce County: 2.3 persons per householdRamsey County: 2.3 persons per householdRansom County: 2.4 persons per householdRenville County: 2.7 persons per householdRichland County: 2.3 persons per householdRolette County: 3.4 persons per householdSargent County: 2.1 persons per householdSheridan County: 2.1 persons per householdSioux County: 3.7 persons per householdSlope County: 2.4 persons per householdStark County: 2.4 persons per householdSteele County: 2.4 persons per householdStutsman County: 2.2 persons per householdTowner County: 2.2 persons per householdTraill County: 2.3 persons per householdWalsh County: 2.3 persons per householdWard County: 2.4 persons per householdWells County: 2.2 persons per householdWilliams County: 2.5 persons per household
  • Under 2.2
  • 2.2 to 2.3
  • 2.3 to 2.4
  • 2.4 to 2.5
  • 2.5 and over
persons per household, 2021. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Sioux County: 3.7 persons per householdSioux County3.7Rolette County: 3.4 persons per householdRolette County3.4Benson County: 3.2 persons per householdBenson County3.2Mountrail County: 2.8 persons per householdMountrail County2.8McKenzie County: 2.8 persons per householdMcKenzie County2.8Oliver County: 2.7 persons per householdOliver County2.7Dunn County: 2.7 persons per householdDunn County2.7Renville County: 2.7 persons per householdRenville County2.7Billings County: 2.7 persons per householdBillings County2.7Williams County: 2.5 persons per householdWilliams County2.5Bowman County: 2.5 persons per householdBowman County2.5Dickey County: 2.5 persons per householdDickey County2.5Morton County: 2.4 persons per householdMorton County2.4Stark County: 2.4 persons per householdStark County2.4Slope County: 2.4 persons per householdSlope County2.4Burke County: 2.4 persons per householdBurke County2.4Burleigh County: 2.4 persons per householdBurleigh County2.4Steele County: 2.4 persons per householdSteele County2.4Ransom County: 2.4 persons per householdRansom County2.4Ward County: 2.4 persons per householdWard County2.4Bottineau County: 2.4 persons per householdBottineau County2.4Golden Valley County: 2.4 persons per householdGolden Valley County2.4LaMoure County: 2.4 persons per householdLaMoure County2.4McLean County: 2.4 persons per householdMcLean County2.4Mercer County: 2.4 persons per householdMercer County2.4Cavalier County: 2.3 persons per householdCavalier County2.3Griggs County: 2.3 persons per householdGriggs County2.3Pierce County: 2.3 persons per householdPierce County2.3Traill County: 2.3 persons per householdTraill County2.3Divide County: 2.3 persons per householdDivide County2.3Kidder County: 2.3 persons per householdKidder County2.3Richland County: 2.3 persons per householdRichland County2.3Cass County: 2.3 persons per householdCass County2.3McHenry County: 2.3 persons per householdMcHenry County2.3Pembina County: 2.3 persons per householdPembina County2.3Foster County: 2.3 persons per householdFoster County2.3Ramsey County: 2.3 persons per householdRamsey County2.3Logan County: 2.3 persons per householdLogan County2.3Walsh County: 2.3 persons per householdWalsh County2.3Hettinger County: 2.3 persons per householdHettinger County2.3Nelson County: 2.3 persons per householdNelson County2.3Grand Forks County: 2.2 persons per householdGrand Forks County2.2Stutsman County: 2.2 persons per householdStutsman County2.2Towner County: 2.2 persons per householdTowner County2.2Grant County: 2.2 persons per householdGrant County2.2Eddy County: 2.2 persons per householdEddy County2.2Adams County: 2.2 persons per householdAdams County2.2Wells County: 2.2 persons per householdWells County2.2Emmons County: 2.2 persons per householdEmmons County2.2Barnes County: 2.1 persons per householdBarnes County2.1Sargent County: 2.1 persons per householdSargent County2.1Sheridan County: 2.1 persons per householdSheridan County2.1McIntosh County: 2 persons per householdMcIntosh County2Sioux County: 3.7 persons per householdSioux County3.7Rolette County: 3.4 persons per householdRolette County3.4Benson County: 3.2 persons per householdBenson County3.2Mountrail County: 2.8 persons per householdMountrail County2.8McKenzie County: 2.8 persons per householdMcKenzie County2.8Oliver County: 2.7 persons per householdOliver County2.7Dunn County: 2.7 persons per householdDunn County2.7Renville County: 2.7 persons per householdRenville County2.7Billings County: 2.7 persons per householdBillings County2.7Williams County: 2.5 persons per householdWilliams County2.5Bowman County: 2.5 persons per householdBowman County2.5Dickey County: 2.5 persons per householdDickey County2.5Morton County: 2.4 persons per householdMorton County2.4Stark County: 2.4 persons per householdStark County2.4Slope County: 2.4 persons per householdSlope County2.4Burke County: 2.4 persons per householdBurke County2.4Burleigh County: 2.4 persons per householdBurleigh County2.4Steele County: 2.4 persons per householdSteele County2.4Ransom County: 2.4 persons per householdRansom County2.4Ward County: 2.4 persons per householdWard County2.4Bottineau County: 2.4 persons per householdBottineau County2.4Golden Valley County: 2.4 persons per householdGolden Valley County2.4LaMoure County: 2.4 persons per householdLaMoure County2.4McLean County: 2.4 persons per householdMcLean County2.4Mercer County: 2.4 persons per householdMercer County2.4Cavalier County: 2.3 persons per householdCavalier County2.3Griggs County: 2.3 persons per householdGriggs County2.3Pierce County: 2.3 persons per householdPierce County2.3Traill County: 2.3 persons per householdTraill County2.3Divide County: 2.3 persons per householdDivide County2.3Kidder County: 2.3 persons per householdKidder County2.3Richland County: 2.3 persons per householdRichland County2.3Cass County: 2.3 persons per householdCass County2.3McHenry County: 2.3 persons per householdMcHenry County2.3Pembina County: 2.3 persons per householdPembina County2.3Foster County: 2.3 persons per householdFoster County2.3Ramsey County: 2.3 persons per householdRamsey County2.3Logan County: 2.3 persons per householdLogan County2.3Walsh County: 2.3 persons per householdWalsh County2.3Hettinger County: 2.3 persons per householdHettinger County2.3Nelson County: 2.3 persons per householdNelson County2.3Grand Forks County: 2.2 persons per householdGrand Forks County2.2Stutsman County: 2.2 persons per householdStutsman County2.2Towner County: 2.2 persons per householdTowner County2.2Grant County: 2.2 persons per householdGrant County2.2Eddy County: 2.2 persons per householdEddy County2.2Adams County: 2.2 persons per householdAdams County2.2Wells County: 2.2 persons per householdWells County2.2Emmons County: 2.2 persons per householdEmmons County2.2Barnes County: 2.1 persons per householdBarnes County2.1Sargent County: 2.1 persons per householdSargent County2.1Sheridan County: 2.1 persons per householdSheridan County2.1McIntosh County: 2 persons per householdMcIntosh County2
persons per household. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2021
persons per household
1Sioux County3.7
2Rolette County3.4
3Benson County3.2
4Mountrail County2.8
5McKenzie County2.8
6Oliver County2.7
7Dunn County2.7
7Renville County2.7
9Billings County2.7
10Williams County2.5
11Bowman County2.5
11Dickey County2.5
13Morton County2.4
13Stark County2.4
15Slope County2.4
16Burke County2.4
16Burleigh County2.4
16Steele County2.4
19Ransom County2.4
19Ward County2.4
21Bottineau County2.4
22Golden Valley County2.4
22LaMoure County2.4
24McLean County2.4
24Mercer County2.4
26Cavalier County2.3
27Griggs County2.3
27Pierce County2.3
27Traill County2.3
30Divide County2.3
31Kidder County2.3
31Richland County2.3
33Cass County2.3
33McHenry County2.3
35Pembina County2.3
36Foster County2.3
36Ramsey County2.3
38Logan County2.3
38Walsh County2.3
40Hettinger County2.3
40Nelson County2.3
42Grand Forks County2.2
43Stutsman County2.2
43Towner County2.2
45Grant County2.2
46Eddy County2.2
47Adams County2.2
47Wells County2.2
49Emmons County2.2
50Barnes County2.1
50Sargent County2.1
52Sheridan County2.1
53McIntosh County2

Other periods

About this ranking

Average number of persons per private household. EU countries: EU-SILC. United States: American Community Survey five-year estimate of people in households divided by occupied housing units, where the period shown is the last year of the five-year span.

Covers private households only; people living in institutions or other group quarters are excluded. EU-SILC figures refer to the survey year. The EU and US surveys differ, so their figures are not strictly comparable.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25010: average household size of occupied housing units (Counties in North Dakota by average household size, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat

MLA 9

American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, Counties in North Dakota by average household size, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat. Invokely, https://invokely.ai/rankings/average-household-size/north-dakota-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. Counties in North Dakota by average household size, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat. Also distributed by Invokely, https://invokely.ai/rankings/average-household-size/north-dakota-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25010: average household size of occupied housing units, Counties in North Dakota by average household size, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat, via Invokely: https://invokely.ai/rankings/average-household-size/north-dakota-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_north_dakota_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25010: average household size of occupied housing units: Counties in North Dakota by average household size, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/average-household-size/north-dakota-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25010: average household size of occupied housing units: Counties in North Dakota by average household size, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat
L2  - https://invokely.ai/rankings/average-household-size/north-dakota-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-household-size/north-dakota-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest average household size?

Sioux County, with 3.7 persons per household in 2021, according to the U.S. Census Bureau.

Which county has the lowest average household size?

McIntosh County, with 2 persons per household in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. Retrieved 2026-10-12.

Average household size: other rankings

Counties in North Dakota: more rankings