RANKING · 2025 ESTIMATES · 36 SHOWN OF 36

Most population gained, Oregon counties

Oregon counties that added 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: Malheur County, OR, up 16 places to #15.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01▲3Deschutes County, OROR213,072+14,819−63%

02Washington County, OROR611,708+11,336−92%

03▲3Marion County, OROR355,777+9,857−83%

04▼1Clackamas County, OROR426,280+4,879−92%

05▲4Linn County, OROR132,843+4,233−64%

06▲10Crook County, OROR27,564+2,826−44%

07▲1Polk County, OROR90,037+2,604−80%

08▲2Benton County, OROR97,728+2,544−65%

09▲2Yamhill County, OROR110,024+2,302−88%

10▲8Columbia County, OROR54,091+1,502−75%

11▲9Jefferson County, OROR25,740+1,238−77%

12▲2Umatilla County, OROR81,119+1,044−91%

13▲6Klamath County, OROR70,274+861−86%

14▲3Douglas County, OROR111,951+750−87%

15▲16Malheur County, OROR32,261+690−88%

16▲10Morrow County, OROR12,602+416−88%

17▼4Lincoln County, OROR50,636+241−96%

18▲11Wallowa County, OROR7,595+204−35%

19▲14Sherman County, OROR2,051+181+1031%

20▲10Lake County, OROR8,187+27−89%

21▲14Wheeler County, OROR1,472+21−86%

22▼1Tillamook County, OROR27,384-6−100%

23▲4Baker County, OROR16,658-10−101%

24▲8Gilliam County, OROR1,971-24−112%

25▲9Harney County, OROR7,380-115−121%

26▼11Clatsop County, OROR40,926-146−106%

27▲9Grant County, OROR7,075-158−293%

28▼16Josephine County, OROR87,867-223−102%

29▼6Hood River County, OROR23,720-257−107%

30▼2Union County, OROR25,900-296−132%

31▼7Wasco County, OROR26,310-360−117%

32▼7Curry County, OROR22,621-825−146%

33▼11Coos County, OROR63,992-937−137%

34▼29Lane County, OROR381,584-1,387−103%

35▼28Jackson County, OROR221,795-1,464−104%

36▼35Multnomah County, OROR795,391-20,037−126%

SHOWING 1–36 OF 36

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