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. The median across all 36 is +204. Biggest climber in the top 100 since 2020: Multnomah County, OR, up 35 places to #1.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01▲35Multnomah County, OROR795,391-20,037−126%

02▲28Jackson County, OROR221,795-1,464−104%

03▲29Lane County, OROR381,584-1,387−103%

04▲11Coos County, OROR63,992-937−137%

05▲7Curry County, OROR22,621-825−146%

06▲7Wasco County, OROR26,310-360−117%

07▲2Union County, OROR25,900-296−132%

08▲6Hood River County, OROR23,720-257−107%

09▲16Josephine County, OROR87,867-223−102%

10▼9Grant County, OROR7,075-158−293%

11▲11Clatsop County, OROR40,926-146−106%

12▼9Harney County, OROR7,380-115−121%

13▼8Gilliam County, OROR1,971-24−112%

14▼4Baker County, OROR16,658-10−101%

15▲1Tillamook County, OROR27,384-6−100%

16▼14Wheeler County, OROR1,472+21−86%

17▼10Lake County, OROR8,187+27−89%

18▼14Sherman County, OROR2,051+181+1031%

19▼11Wallowa County, OROR7,595+204−35%

20▲4Lincoln County, OROR50,636+241−96%

21▼10Morrow County, OROR12,602+416−88%

22▼16Malheur County, OROR32,261+690−88%

23▼3Douglas County, OROR111,951+750−87%

24▼6Klamath County, OROR70,274+861−86%

25▼2Umatilla County, OROR81,119+1,044−91%

26▼9Jefferson County, OROR25,740+1,238−77%

27▼8Columbia County, OROR54,091+1,502−75%

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

29▼2Benton County, OROR97,728+2,544−65%

30▼1Polk County, OROR90,037+2,604−80%

31▼10Crook County, OROR27,564+2,826−44%

32▼4Linn County, OROR132,843+4,233−64%

33▲1Clackamas County, OROR426,280+4,879−92%

34▼3Marion County, OROR355,777+9,857−83%

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

36▼3Deschutes County, OROR213,072+14,819−63%

SHOWING 1–36 OF 36

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES