RANKING · 1990 CENSUS · 36 SHOWN OF 36

Least racially diverse, Oregon counties · 1990

Oregon counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 36 counties in Oregon that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Wheeler County, OROR1,4724−68%

02Wallowa County, OROR7,5956+22%

03Sherman County, OROR2,0517−42%

04Baker County, OROR16,6588+12%

05Gilliam County, OROR1,9718+58%

06Tillamook County, OROR27,38410−31%

07Deschutes County, OROR213,07210−8%

08Union County, OROR25,90011+18%

09Grant County, OROR7,07511+92%

10Columbia County, OROR54,09113+51%

11Linn County, OROR132,84313−6%

12Douglas County, OROR111,95113+29%

13Curry County, OROR22,62113+18%

14Crook County, OROR27,56413−10%

15Lincoln County, OROR50,63614−9%

16Clatsop County, OROR40,92614−9%

17Josephine County, OROR87,86714+9%

18Clackamas County, OROR426,28014−27%

19Coos County, OROR63,99216+36%

20Lane County, OROR381,58417−7%

21Jackson County, OROR221,79519+1%

22Harney County, OROR7,38019+59%

23Lake County, OROR8,18719+26%

24Benton County, OROR97,72823−2%

25Yamhill County, OROR110,02426−8%

26Polk County, OROR90,03727+11%

27Wasco County, OROR26,31027+10%

28Klamath County, OROR70,27427+23%

29Washington County, OROR611,70828−34%

30Marion County, OROR355,77734−20%

31Multnomah County, OROR795,39135−19%

32Umatilla County, OROR81,11940+3%

33Morrow County, OROR12,60242−13%

34Hood River County, OROR23,72046−11%

35Jefferson County, OROR25,74061+41%

36Malheur County, OROR32,26162+15%

SHOWING 1–36 OF 36

Download CSV (full list, 36 rows)How this score is calculated

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES