North Dakota Counties by Population (2025)

Top 5 Most Populous Counties

North Dakota flag Cass County

203,660

North Dakota flag Burleigh County

101,244

North Dakota flag Grand Forks County

73,282

North Dakota flag Ward County

67,420

North Dakota flag Williams County

41,407

53 Counties

County
2025 Pop. ↓
Area (mi²)
Density
Change (2020)
Cass County203,6601,76511510.16%
Burleigh County101,2441,633622.68%
Grand Forks County73,2821,436510.19%
Ward County67,4202,01333-3.58%
Williams County41,4072,078200.55%
Morton County34,2751,926182.88%
Stark County33,5671,33525-0.78%
Stutsman County21,2242,22210-1.47%
Richland County16,5261,43612-0.05%
McKenzie County14,9782,76051.37%
Rolette County11,45090313-6.09%
Ramsey County11,3571,18510-1.86%
Barnes County10,6561,4927-1.8%
Walsh County9,9951,2828-5.07%
McLean County9,7802,11050.14%
Mountrail County9,6671,8255-1.24%
Mercer County8,2731,0438-0.89%
Traill County7,8148629-2.17%
Pembina County6,4931,1196-5.05%
Bottineau County6,2791,6694-1.71%
Benson County5,6911,3894-4.11%
Ransom County5,5158626-3.11%
McHenry County5,0031,8743-6.17%
Dickey County4,8441,1314-2.52%
LaMoure County4,1361,14640.85%
Dunn County4,0692,0082-0.71%
Pierce County3,8441,0184-3.47%
Wells County3,7841,2713-4.73%
Sargent County3,7208584-2.82%
Cavalier County3,5721,4892-3.56%
Sioux County3,5571,0943-8.32%
Foster County3,1676345-6.5%
Emmons County3,1641,5082-3.71%
Nelson County2,9759823-0.63%
Bowman County2,8031,1622-5.94%
McIntosh County2,4749753-1.71%
Hettinger County2,4231,1322-1.78%
Renville County2,33787732.77%
Kidder County2,2641,3512-4.95%
Griggs County2,2467093-1.96%
Adams County2,22398821.28%
Eddy County2,1756303-6.41%
Grant County2,1691,6591-5.12%
Burke County2,1381,1042-2.55%
Divide County2,0671,2612-6.26%
Towner County1,9701,0252-8.24%
Logan County1,93199322.44%
Oliver County1,91372232.35%
Steele County1,7607122-1.9%
Golden Valley County1,7371,00120.93%
Sheridan County1,2269721-2.62%
Billings County1,0521,148112.75%
Slope County6581,2151-6.4%

Overview of North Dakota Counties

There are 53 counties in North Dakota.

Cass County is the largest county in the state, with a population of 203,660. The most recent census shows that its population has increased by 0.10% since the previous census.

A number of other North Dakota counties also boast relatively large populations for their state, though not able to match the density of Cass County:

North Dakota Counties with the Fewest Residents

The smallest county in North Dakota is Slope County, with a population of just 658. This total represents a decrease of 0.1% since the last census count was performed.

Other small counties include:

North Dakota Counties with Rapid Growth

Billings County, with its current population of 1,052, has shown the largest population growth, with an increase of 0.1% since the last census.

On the other hand, Sioux County has had the largest decrease in population, with its 3,557 current residents totalling 0.1% less than the previous census.

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)