RANKING · 1990 CENSUS · 36 SHOWN OF 36

Youngest by median age, Oregon counties · 1990

Oregon counties with the youngest median age (1990 ACS). This list covers the 36 counties in Oregon that qualify, ranked against each other statewide. The median across all 36 is 35.7.

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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 –

01Benton County, OROR97,72829.6–

02Jefferson County, OROR25,74031.7–

03Washington County, OROR611,70832.7–

04Yamhill County, OROR110,02432.8–

05Umatilla County, OROR81,11933.2–

06Morrow County, OROR12,60233.6–

07Marion County, OROR355,77733.7–

08Malheur County, OROR32,26133.9–

09Lane County, OROR381,58433.9–

10Union County, OROR25,90034.0–

11Hood River County, OROR23,72034.2–

12Multnomah County, OROR795,39134.2–

13Polk County, OROR90,03734.3–

14Columbia County, OROR54,09134.8–

15Linn County, OROR132,84334.8–

16Klamath County, OROR70,27434.8–

17Clackamas County, OROR426,28035.2–

18Harney County, OROR7,38035.7–

19Crook County, OROR27,56435.7–

20Clatsop County, OROR40,92635.9–

21Deschutes County, OROR213,07235.9–

22Douglas County, OROR111,95136.0–

23Lake County, OROR8,18736.3–

24Grant County, OROR7,07536.3–

25Jackson County, OROR221,79536.6–

26Wasco County, OROR26,31037.0–

27Wallowa County, OROR7,59537.6–

28Coos County, OROR63,99237.6–

29Sherman County, OROR2,05137.8–

30Gilliam County, OROR1,97137.8–

31Baker County, OROR16,65838.0–

32Lincoln County, OROR50,63639.6–

33Josephine County, OROR87,86740.0–

34Tillamook County, OROR27,38440.9–

35Wheeler County, OROR1,47243.4–

36Curry County, OROR22,62143.9–

SHOWING 1–36 OF 36

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