RANKING · 2025 ESTIMATES · 36 SHOWN OF 36

Most population lost, Oregon counties

Oregon counties that lost the most residents from the 2020 census to 2025, 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

01Multnomah County, OROR795,391-20,037−126%

02Jackson County, OROR221,795-1,464−104%

03Lane County, OROR381,584-1,387−103%

04Coos County, OROR63,992-937−137%

05Curry County, OROR22,621-825−146%

06Wasco County, OROR26,310-360−117%

07Union County, OROR25,900-296−132%

08Hood River County, OROR23,720-257−107%

09Josephine County, OROR87,867-223−102%

10Grant County, OROR7,075-158−293%

11Clatsop County, OROR40,926-146−106%

12Harney County, OROR7,380-115−121%

13Gilliam County, OROR1,971-24−112%

14Baker County, OROR16,658-10−101%

15Tillamook County, OROR27,384-6−100%

16Wheeler County, OROR1,472+21−86%

17Lake County, OROR8,187+27−89%

18Sherman County, OROR2,051+181+1031%

19Wallowa County, OROR7,595+204−35%

20Lincoln County, OROR50,636+241−96%

21Morrow County, OROR12,602+416−88%

22Malheur County, OROR32,261+690−88%

23Douglas County, OROR111,951+750−87%

24Klamath County, OROR70,274+861−86%

25Umatilla County, OROR81,119+1,044−91%

26Jefferson County, OROR25,740+1,238−77%

27Columbia County, OROR54,091+1,502−75%

28Yamhill County, OROR110,024+2,302−88%

29Benton County, OROR97,728+2,544−65%

30Polk County, OROR90,037+2,604−80%

31Crook County, OROR27,564+2,826−44%

32Linn County, OROR132,843+4,233−64%

33Clackamas County, OROR426,280+4,879−92%

34Marion County, OROR355,777+9,857−83%

35Washington County, OROR611,708+11,336−92%

36Deschutes County, OROR213,072+14,819−63%

SHOWING 1–36 OF 36

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES