North Dakota Counties by Population (2025)

2025 Pop.

20K

40K

60K

80K

100K

120K

140K

160K

180K

200K

Top 5 Most Populous Counties

53 Counties

County
2025 Pop. ↓
Area (mi²)
Density
Change (2020)
Cass County203,7331.8K11510.19%
Burleigh County104,7301.6K646.23%
Grand Forks County74,3441.4K521.66%
Ward County68,4352K34-2.13%
Williams County42,2222.1K202.51%
Stark County34,4171.3K261.72%
Morton County34,3411.9K183.06%
Stutsman County21,5702.2K100.07%
Richland County16,7121.4K121.09%
McKenzie County15,2822.8K63.42%
Rolette County11,61890313-4.77%
Ramsey County11,5031.2K10-0.7%
Barnes County10,8291.5K7-0.12%
Walsh County10,1351.3K8-3.7%
McLean County9,8542.1K50.93%
Mountrail County9,5211.8K5-2.88%
Mercer County8,3741K80.31%
Traill County8,02186290.53%
Pembina County6,4861.1K6-4.98%
Bottineau County6,4471.7K41.13%
Benson County5,7341.4K4-3.47%
Ransom County5,5748626-2.09%
McHenry County5,1181.9K3-3.72%
Dickey County4,9201.1K4-0.81%
LaMoure County4,0341.1K4-1.51%
Dunn County4,0112K2-2.12%
Pierce County3,7961K4-4.5%
Sioux County3,7671.1K3-2.94%
Wells County3,7401.3K3-5.72%
Sargent County3,6268584-5.65%
Cavalier County3,5291.5K2-4.62%
Foster County3,3126345-2.24%
Emmons County3,1771.5K2-3.46%
Nelson County3,00498230.17%
Bowman County2,9021.2K2-2.65%
McIntosh County2,4349752-3.26%
Renville County2,42787736.35%
Hettinger County2,4201.1K2-1.94%
Kidder County2,3821.4K2-0.42%
Eddy County2,34063040.82%
Grant County2,2451.7K1-2.01%
Griggs County2,2047093-4.22%
Burke County2,1611.1K2-1.41%
Adams County2,1399882-1.93%
Divide County2,1001.3K2-4.76%
Towner County2,0661K2-3.41%
Oliver County1,89172231.23%
Logan County1,8749932-0.32%
Golden Valley County1,8301K26.46%
Steele County1,7687122-1.23%
Sheridan County1,2599721-0.24%
Billings County1,0901.1K116.7%
Slope County6411.2K1-8.69%

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 203,733. 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 641. 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 1,090, has shown the largest population growth, with an increase of 0.2% since the last census.

On the other hand, Slope County has had the largest decrease in population, with its 641 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)

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