RANKING · 2010 CENSUS · 36 SHOWN OF 36

Most population lost, Oregon counties · 2010

Oregon counties that lost the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 36 counties in Oregon that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Baker County, OROR16,658-607−143%

02Grant County, OROR7,075-490−698%

03Malheur County, OROR32,261-302−105%

04Wallowa County, OROR7,595-218−169%

05Harney County, OROR7,380-187−134%

06Sherman County, OROR2,051-169−1156%

07Wheeler County, OROR1,472-106−170%

08Gilliam County, OROR1,971-44−122%

09Morrow County, OROR12,602+178−95%

10Coos County, OROR63,992+264−89%

11Lake County, OROR8,187+473+100%

12Tillamook County, OROR27,384+988−63%

13Union County, OROR25,900+1,218+31%

14Curry County, OROR22,621+1,227−32%

15Clatsop County, OROR40,926+1,409−40%

16Wasco County, OROR26,310+1,422−33%

17Lincoln County, OROR50,636+1,555−72%

18Crook County, OROR27,564+1,796−65%

19Hood River County, OROR23,720+1,935−45%

20Klamath County, OROR70,274+2,605−57%

21Jefferson County, OROR25,740+2,711−49%

22Umatilla County, OROR81,119+5,341−53%

23Columbia County, OROR54,091+5,791−4%

24Josephine County, OROR87,867+6,987−47%

25Douglas County, OROR111,951+7,268+26%

26Benton County, OROR97,728+7,426+1%

27Polk County, OROR90,037+13,023+1%

28Linn County, OROR132,843+13,603+15%

29Yamhill County, OROR110,024+14,201−27%

30Jackson County, OROR221,795+21,937−37%

31Lane County, OROR381,584+28,756−28%

32Marion County, OROR355,777+30,501−46%

33Clackamas County, OROR426,280+37,601−37%

34Deschutes County, OROR213,072+42,366+5%

35Multnomah County, OROR795,391+74,848−2%

36Washington County, OROR611,708+84,368−37%

SHOWING 1–36 OF 36

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