Fastest Growing Counties in North Dakota (2025)

County
Rank
Change (2020)
2025 Pop.
2020 Pop.
Billings County112.75%1,052933
Cass County210.16%203,660184,876
Morton County32.88%34,27533,315
Renville County42.77%2,3372,274
Burleigh County52.68%101,24498,601
Logan County62.44%1,9311,885
Oliver County72.35%1,9131,869
McKenzie County81.37%14,97814,776
Adams County91.28%2,2232,195
Golden Valley County100.93%1,7371,721
LaMoure County110.85%4,1364,101
Williams County120.55%41,40741,182
Grand Forks County130.19%73,28273,141
McLean County140.14%9,7809,766
Richland County15-0.05%16,52616,534
Nelson County16-0.63%2,9752,994
Dunn County17-0.71%4,0694,098
Stark County18-0.78%33,56733,832
Mercer County19-0.89%8,2738,347
Mountrail County20-1.24%9,6679,788
Stutsman County21-1.47%21,22421,540
Bottineau County22-1.71%6,2796,388
McIntosh County23-1.71%2,4742,517
Hettinger County24-1.78%2,4232,467
Barnes County25-1.8%10,65610,851
Ramsey County26-1.86%11,35711,572
Steele County27-1.9%1,7601,794
Griggs County28-1.96%2,2462,291
Traill County29-2.17%7,8147,987
Dickey County30-2.52%4,8444,969
Burke County31-2.55%2,1382,194
Sheridan County32-2.62%1,2261,259
Sargent County33-2.82%3,7203,828
Ransom County34-3.11%5,5155,692
Pierce County35-3.47%3,8443,982
Cavalier County36-3.56%3,5723,704
Ward County37-3.58%67,42069,921
Emmons County38-3.71%3,1643,286
Benson County39-4.11%5,6915,935
Wells County40-4.73%3,7843,972
Kidder County41-4.95%2,2642,382
Pembina County42-5.05%6,4936,838
Walsh County43-5.07%9,99510,529
Grant County44-5.12%2,1692,286
Bowman County45-5.94%2,8032,980
Rolette County46-6.09%11,45012,193
McHenry County47-6.17%5,0035,332
Divide County48-6.26%2,0672,205
Slope County49-6.4%658703
Eddy County50-6.41%2,1752,324
Foster County51-6.5%3,1673,387
Towner County52-8.24%1,9702,147
Sioux County53-8.32%3,5573,880

North Dakota County Growth Overview

North Dakota's counties show varied growth patterns from 2020 to 2025. Billings County leads with 12.75% annualized growth, followed by Cass County (10.16%) and Morton County (2.88%). The largest counties are Cass County (203,660), Burleigh County (101,244), and Grand Forks County (73,282). Of the 53 counties in North Dakota, 14 are growing while 39 have experienced population decline. Overall, counties averaged -1.82% annualized growth, with total population growing by 1.85% annually.