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What are the largest counties in North Dakota?

Cass County is the largest county in North Dakota, with 201,794 residents in 2025 (Census PEP). Burleigh County (103,251) and Grand Forks County (74,501) come next.

Data as of 2025 · updated

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All 52 ranked North Dakota counties

North Dakota counties ranked by population
RankCountyResidents 2025Change 2020–25
1Cass County201,794+9.1%
2Burleigh County103,251+4.7%
3Grand Forks County74,501+1.9%
4Ward County68,233−2.4%
5Williams County41,767+1.4%
6Morton County34,601+3.8%
7Stark County34,013+0.5%
8Stutsman County21,414−0.6%
9Richland County16,731+1.2%
10McKenzie County15,192+2.8%
11Rolette County11,688−4.1%
12Ramsey County11,530−0.4%
13Barnes County10,573−2.7%
14Walsh County10,179−3.4%
15McLean County9,740−0.2%
16Mountrail County9,395−4.2%
17Mercer County8,441+1.1%
18Traill County7,920−0.8%
19Pembina County6,568−3.8%
20Bottineau County6,284−1.6%
21Benson County5,759−3.0%
22Ransom County5,617−1.5%
23McHenry County5,130−3.9%
24Dickey County4,895−1.5%
25LaMoure County4,135+1.0%
26Dunn County4,058−0.9%
27Pierce County3,838−3.6%
28Wells County3,729−5.9%
29Sargent County3,711−3.4%
30Sioux County3,667−5.4%
31Cavalier County3,497−5.4%
32Emmons County3,215−2.4%
33Foster County3,212−5.1%
34Nelson County2,963−1.0%
35Bowman County2,762−7.1%
36Hettinger County2,492+0.4%
37McIntosh County2,451−2.5%
38Kidder County2,393+0.5%
39Renville County2,331+2.9%
40Eddy County2,329+0.1%
41Adams County2,275+3.7%
42Griggs County2,239−2.5%
43Grant County2,206−3.5%
44Burke County2,132−2.7%
45Divide County2,110−4.2%
46Towner County2,040−5.0%
47Oliver County1,898+1.7%
48Logan County1,859−1.3%
49Golden Valley County1,808+4.8%
50Steele County1,797−0.1%
51Sheridan County1,296+2.7%
52Billings County1,071–

How this is ranked

The Census Bureau's July 1 resident population estimates for 2025, largest first, with the change since 2020. Counties with fewer than 1,000 residents are not ranked. Areas without an estimate for the same year as the others are not ranked.

Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025). Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how ranks and figures are built.

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Questions

What is the largest county in North Dakota?

Cass County is the largest county in North Dakota, with 201,794 residents in 2025 (Census PEP). Burleigh County (103,251) and Grand Forks County (74,501) come next.

How is this ranking calculated?

The Census Bureau's July 1 resident population estimates for 2025, largest first, with the change since 2020. Counties with fewer than 1,000 residents are not ranked. Areas without an estimate for the same year as the others are not ranked.

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