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.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

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

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

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

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

05Linn County, OROR132,843+4,233−64%

06Crook County, OROR27,564+2,826−44%

07Polk County, OROR90,037+2,604−80%

08Benton County, OROR97,728+2,544−65%

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

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

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

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

13Klamath County, OROR70,274+861−86%

14Douglas County, OROR111,951+750−87%

15Malheur County, OROR32,261+690−88%

16Morrow County, OROR12,602+416−88%

17Lincoln County, OROR50,636+241−96%

18Wallowa County, OROR7,595+204−35%

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

20Lake County, OROR8,187+27−89%

21Wheeler County, OROR1,472+21−86%

22Tillamook County, OROR27,384-6−100%

23Baker County, OROR16,658-10−101%

24Gilliam County, OROR1,971-24−112%

25Harney County, OROR7,380-115−121%

26Clatsop County, OROR40,926-146−106%

27Grant County, OROR7,075-158−293%

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

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

30Union County, OROR25,900-296−132%

31Wasco County, OROR26,310-360−117%

32Curry County, OROR22,621-825−146%

33Coos County, OROR63,992-937−137%

34Lane County, OROR381,584-1,387−103%

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

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

SHOWING 1–36 OF 36

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