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%−3.9 pts

02Wheeler County, OROR1,472+0.7%−10.1 pts

03Malheur County, OROR32,261+0.8%−20.6 pts

04Harney County, OROR7,380+1.0%−6.8 pts

05Union County, OROR25,900+1.7%−2.2 pts

06Coos County, OROR63,992+3.0%−1.2 pts

07Douglas County, OROR111,951+3.3%−2.8 pts

08Baker County, OROR16,658+3.3%−6.0 pts

09Lake County, OROR8,187+3.4%+0.1 pts

10Klamath County, OROR70,274+4.6%−6.0 pts

11Curry County, OROR22,621+4.8%−4.5 pts

12Wallowa County, OROR7,595+5.5%+0.9 pts

13Umatilla County, OROR81,119+5.5%−13.6 pts

14Wasco County, OROR26,310+5.8%−3.9 pts

15Sherman County, OROR2,051+5.9%+5.1 pts

16Josephine County, OROR87,867+6.5%−14.4 pts

17Columbia County, OROR54,091+6.6%−9.4 pts

18Gilliam County, OROR1,971+6.6%−4.9 pts

19Hood River County, OROR23,720+7.3%−13.5 pts

20Tillamook County, OROR27,384+8.5%−4.0 pts

21Yamhill County, OROR110,024+8.6%−21.1 pts

22Lane County, OROR381,584+8.9%−5.3 pts

23Morrow County, OROR12,602+9.1%−35.1 pts

24Lincoln County, OROR50,636+9.5%−4.9 pts

25Marion County, OROR355,777+9.7%−15.0 pts

26Jackson County, OROR221,795+9.9%−14.0 pts

27Linn County, OROR132,843+10.2%−2.7 pts

28Clatsop County, OROR40,926+10.9%+3.9 pts

29Multnomah County, OROR795,391+10.9%−2.2 pts

30Benton County, OROR97,728+11.2%+0.9 pts

31Clackamas County, OROR426,280+12.1%−9.3 pts

32Jefferson County, OROR25,740+12.8%−26.2 pts

33Washington County, OROR611,708+13.3%−29.6 pts

34Polk County, OROR90,037+16.0%−10.0 pts

35Crook County, OROR27,564+17.9%−18.0 pts

36Deschutes County, OROR213,072+25.7%−28.2 pts

SHOWING 1–36 OF 36

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS