Fastest Growing Counties in Oregon (2025)

County
Rank
Change (2020)
2025 Pop.
2020 Pop.
Crook County112.73%28,10224,929
Deschutes County26.57%212,573199,464
Sherman County34.7%1,9591,871
Jefferson County44.61%25,71424,581
Wallowa County54.27%7,7227,406
Linn County63.31%133,244128,981
Columbia County73.23%54,42652,724
Benton County82.73%97,81795,214
Polk County92.58%90,22987,956
Malheur County102.45%32,41631,642
Gilliam County112.28%2,0622,016
Douglas County121.28%112,725111,295
Yamhill County131.17%109,208107,945
Lincoln County140.89%50,95950,510
Morrow County150.83%12,32212,221
Baker County160.78%16,86216,731
Clackamas County170.19%423,283422,468
Marion County180.13%346,785346,350
Klamath County190.11%69,62969,553
Josephine County20-0.42%87,86388,238
Lake County21-0.48%8,1338,172
Umatilla County22-0.59%79,63780,108
Grant County23-0.62%7,1957,240
Washington County24-0.78%596,423601,130
Tillamook County25-0.92%27,20927,461
Lane County26-1.08%379,181383,308
Wheeler County27-1.1%1,4381,454
Jackson County28-2.08%218,966223,620
Union County29-2.56%25,50226,173
Clatsop County30-2.82%40,00241,162
Wasco County31-2.82%25,88926,640
Hood River County32-3.33%23,16523,962
Harney County33-3.34%7,2567,507
Coos County34-3.37%62,79064,979
Curry County35-3.64%22,66223,519
Multnomah County36-4.48%779,968816,514

Oregon County Growth Overview

Oregon's counties show varied growth patterns from 2020 to 2025. Crook County leads with 12.73% annualized growth, followed by Deschutes County (6.57%) and Sherman County (4.7%). The largest counties are Multnomah County (779,968), Washington County (596,423), and Clackamas County (423,283). Of the 36 counties in Oregon, 19 are growing while 17 have experienced population decline. Overall, counties averaged 0.57% annualized growth, with total population growing by -0.56% annually.