Data / Rankings / Median age / Counties in North Dakota

Counties in North Dakota by median age, 2024

Slope County had the highest median age of 53 counties in 2024, at 54.1 years. Sioux County had the lowest, at 28.2 years. The median was 43.4 years and the figure for North Dakota was 35.9 years. Source: the U.S. Census Bureau.

Highest54.1Slope County
Lowest28.2Sioux County
Median43.453 counties
North Dakota35.9History

All counties, 2024

CSVChart (SVG)

Slope CountySlope County: 54.1 years54.1McIntosh CountyMcIntosh County: 53 years53Emmons CountyEmmons County: 51.7 years51.7Griggs CountyGriggs County: 51.5 years51.5Sheridan CountySheridan County: 51.5 years51.5Logan CountyLogan County: 50.3 years50.3Nelson CountyNelson County: 50.1 years50.1Divide CountyDivide County: 49.7 years49.7Grant CountyGrant County: 48.9 years48.9Towner CountyTowner County: 48.9 years48.9Cavalier CountyCavalier County: 48.3 years48.3Kidder CountyKidder County: 48.1 years48.1McLean CountyMcLean County: 47.7 years47.7Eddy CountyEddy County: 47.5 years47.5Golden Valley CountyGolden Valley County: 47.2 years47.2Steele CountySteele County: 46.9 years46.9LaMoure CountyLaMoure County: 46.5 years46.5Wells CountyWells County: 46.3 years46.3Adams CountyAdams County: 46.1 years46.1Oliver CountyOliver County: 46.1 years46.1Pembina CountyPembina County: 45.5 years45.5Pierce CountyPierce County: 45.1 years45.1Sargent CountySargent County: 44.9 years44.9Bottineau CountyBottineau County: 44.2 years44.2Renville CountyRenville County: 43.8 years43.8Barnes CountyBarnes County: 43.5 years43.5Foster CountyFoster County: 43.4 years43.4McHenry CountyMcHenry County: 43.4 years43.4Walsh CountyWalsh County: 43.2 years43.2Ransom CountyRansom County: 43.1 years43.1Hettinger CountyHettinger County: 42.9 years42.9Mercer CountyMercer County: 42.9 years42.9Bowman CountyBowman County: 42.8 years42.8Billings CountyBillings County: 41.8 years41.8Stutsman CountyStutsman County: 41.1 years41.1Dunn CountyDunn County: 40.4 years40.4Traill CountyTraill County: 40.4 years40.4Ramsey CountyRamsey County: 40.3 years40.3Burke CountyBurke County: 39.7 years39.7Dickey CountyDickey County: 39.5 years39.5Burleigh CountyBurleigh County: 38.5 years38.5Richland CountyRichland County: 38 years38Morton CountyMorton County: 37.6 years37.6Mountrail CountyMountrail County: 35.4 years35.4Stark CountyStark County: 34.8 years34.8Ward CountyWard County: 33.6 years33.6Cass CountyCass County: 32.8 years32.8Benson CountyBenson County: 32.6 years32.6Rolette CountyRolette County: 32.5 years32.5Williams CountyWilliams County: 31.8 years31.8McKenzie CountyMcKenzie County: 31.5 years31.5Grand Forks CountyGrand Forks County: 30.9 years30.9Sioux CountySioux County: 28.2 years28.2
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2024
years		Change on 2023
1Slope County54.1-0.1
2McIntosh County53-0.8
3Emmons County51.7+0.2
4Griggs County51.5+0.9
4Sheridan County51.5+0.7
6Logan County50.3+0.4
7Nelson County50.1-0.3
8Divide County49.7+2.4
9Grant County48.9+0.1
9Towner County48.9-1.4
11Cavalier County48.3+1.2
12Kidder County48.1+0.3
13McLean County47.7+0.3
14Eddy County47.5-1.2
15Golden Valley County47.2+1.5
16Steele County46.9+0.5
17LaMoure County46.5-0.2
18Wells County46.3-1.6
19Adams County46.1-3.9
19Oliver County46.10
21Pembina County45.50
22Pierce County45.1+0.8
23Sargent County44.9+0.8
24Bottineau County44.2+0.4
25Renville County43.8+1.3
26Barnes County43.5+0.6
27Foster County43.4+0.1
27McHenry County43.40
29Walsh County43.2-0.6
30Ransom County43.1+2
31Hettinger County42.9+0.3
31Mercer County42.9+0.1
33Bowman County42.8+0.1
34Billings County41.8-2.9
35Stutsman County41.1+0.5
36Dunn County40.4-0.4
36Traill County40.4-0.3
38Ramsey County40.3+0.1
39Burke County39.7-1.4
40Dickey County39.5+0.9
41Burleigh County38.5+0.5
42Richland County380
43Morton County37.6-0.1
44Mountrail County35.4+0.3
45Stark County34.8+0.3
46Ward County33.6+0.3
47Cass County32.8-0.1
48Benson County32.6+0.2
49Rolette County32.5+0.4
50Williams County31.8-0.5
51McKenzie County31.5+0.3
52Grand Forks County30.9+0.3
53Sioux County28.2-0.5

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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 B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Slope County, with 54.1 years in 2024, according to the U.S. Census Bureau.

Which county has the lowest median age?

Sioux County, with 28.2 years in 2024.

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 B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in North Dakota: more rankings