RANKING · 2020 CENSUS · 36 SHOWN OF 36

Youngest by median age, Oregon counties · 2020

Oregon counties with the youngest median age (2020 ACS). This list covers the 36 counties in Oregon that qualify, ranked against each other statewide. The median across all 36 is 43.1.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Benton County, OROR97,72833.2+7%

02Morrow County, OROR12,60236.9+11%

03Marion County, OROR355,77737.1+10%

04Umatilla County, OROR81,11937.2+8%

05Washington County, OROR611,70837.2+13%

06Multnomah County, OROR795,39137.7+8%

07Malheur County, OROR32,26138.0+12%

08Polk County, OROR90,03738.6+6%

09Yamhill County, OROR110,02439.5+16%

10Union County, OROR25,90040.1+6%

11Hood River County, OROR23,72040.2+14%

12Linn County, OROR132,84340.4+8%

13Lane County, OROR381,58440.6+11%

14Jefferson County, OROR25,74041.5+19%

15Clackamas County, OROR426,28041.7+11%

16Wasco County, OROR26,31042.3+6%

17Deschutes County, OROR213,07242.5+11%

18Klamath County, OROR70,27443.0+13%

19Jackson County, OROR221,79543.1+10%

20Columbia County, OROR54,09143.4+15%

21Clatsop County, OROR40,92644.6+12%

22Harney County, OROR7,38044.9+13%

23Sherman County, OROR2,05146.3+11%

24Crook County, OROR27,56447.3+23%

25Lake County, OROR8,18747.3+11%

26Gilliam County, OROR1,97148.0+12%

27Douglas County, OROR111,95148.1+17%

28Baker County, OROR16,65848.4+13%

29Josephine County, OROR87,86748.4+12%

30Coos County, OROR63,99249.1+14%

31Tillamook County, OROR27,38449.2+13%

32Grant County, OROR7,07550.8+22%

33Wallowa County, OROR7,59552.8+19%

34Lincoln County, OROR50,63652.9+20%

35Wheeler County, OROR1,47255.9+16%

36Curry County, OROR22,62157.5+18%

SHOWING 1–36 OF 36

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