RANKING · 2000 CENSUS · 36 SHOWN OF 36

Most population gained, Oregon counties · 2000

Oregon counties that added the most residents from the 1990 census to 2000, 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 +5,577.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

01Washington County, OROR611,708+133,788–

02Multnomah County, OROR795,391+76,599–

03Clackamas County, OROR426,280+59,541–

04Marion County, OROR355,777+56,351–

05Deschutes County, OROR213,072+40,409–

06Lane County, OROR381,584+40,047–

07Jackson County, OROR221,795+34,880–

08Yamhill County, OROR110,024+19,441–

09Josephine County, OROR87,867+13,077–

10Polk County, OROR90,037+12,839–

11Linn County, OROR132,843+11,842–

12Umatilla County, OROR81,119+11,299–

13Benton County, OROR97,728+7,342–

14Klamath County, OROR70,274+6,073–

15Columbia County, OROR54,091+6,003–

16Douglas County, OROR111,951+5,750–

17Lincoln County, OROR50,636+5,590–

18Malheur County, OROR32,261+5,577–

19Jefferson County, OROR25,740+5,333–

20Crook County, OROR27,564+5,071–

21Hood River County, OROR23,720+3,508–

22Morrow County, OROR12,602+3,370–

23Tillamook County, OROR27,384+2,692–

24Coos County, OROR63,992+2,506–

25Clatsop County, OROR40,926+2,329–

26Wasco County, OROR26,310+2,108–

27Curry County, OROR22,621+1,810–

28Baker County, OROR16,658+1,424–

29Union County, OROR25,900+932–

30Harney County, OROR7,380+549–

31Wallowa County, OROR7,595+315–

32Lake County, OROR8,187+236–

33Gilliam County, OROR1,971+198–

34Wheeler County, OROR1,472+151–

35Grant County, OROR7,075+82–

36Sherman County, OROR2,051+16–

SHOWING 1–36 OF 36

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS