RANKING · 2020 CENSUS · 36 SHOWN OF 36

Fastest shrinking, Oregon counties · 2020

Oregon counties with the steepest population decline from the 2010 census to 2020. This list covers the 36 counties in Oregon that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Grant County, OROR7,075-2.8%−373%

02Wheeler County, OROR1,472+0.7%−94%

03Malheur County, OROR32,261+0.8%−96%

04Harney County, OROR7,380+1.0%−87%

05Union County, OROR25,900+1.7%−56%

06Coos County, OROR63,992+3.0%−28%

07Douglas County, OROR111,951+3.3%−46%

08Baker County, OROR16,658+3.3%−64%

09Lake County, OROR8,187+3.4%+2%

10Klamath County, OROR70,274+4.6%−57%

11Curry County, OROR22,621+4.8%−48%

12Wallowa County, OROR7,595+5.5%+20%

13Umatilla County, OROR81,119+5.5%−71%

14Wasco County, OROR26,310+5.8%−41%

15Sherman County, OROR2,051+5.9%+613%

16Josephine County, OROR87,867+6.5%−69%

17Columbia County, OROR54,091+6.6%−59%

18Gilliam County, OROR1,971+6.6%−43%

19Hood River County, OROR23,720+7.3%−65%

20Tillamook County, OROR27,384+8.5%−32%

21Yamhill County, OROR110,024+8.6%−71%

22Lane County, OROR381,584+8.9%−37%

23Morrow County, OROR12,602+9.1%−79%

24Lincoln County, OROR50,636+9.5%−34%

25Marion County, OROR355,777+9.7%−61%

26Jackson County, OROR221,795+9.9%−59%

27Linn County, OROR132,843+10.2%−21%

28Clatsop County, OROR40,926+10.9%+56%

29Multnomah County, OROR795,391+10.9%−17%

30Benton County, OROR97,728+11.2%+8%

31Clackamas County, OROR426,280+12.1%−43%

32Jefferson County, OROR25,740+12.8%−67%

33Washington County, OROR611,708+13.3%−69%

34Polk County, OROR90,037+16.0%−38%

35Crook County, OROR27,564+17.9%−50%

36Deschutes County, OROR213,072+25.7%−52%

SHOWING 1–36 OF 36

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS