Most diverse counties in Washington

Written by:
October 16, 2021
Joe Mabel // Wikimedia Commons

Most diverse counties in Washington

The United States has a longstanding reputation as being a melting pot (or salad bowl), with its diversity manifesting itself across many different demographics. However, some places across the country are notably more heterogeneous than others.

Stacker compiled a list of the most diverse counties in Washington using data from using data from the U.S. Census Bureau. Counties are ranked by the highest Simpson's diversity index score. Simpson’s diversity index measures community diversity on a scale of 0 (least diverse) to 1 (most diverse), more on the calculation can be read here.

Think you know which counties in your home state might be the most diverse? Keep reading to see if your predictions are correct.

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Publichall // Wikimedia Commons

#39. Lincoln County

- Index: 0.126
- Total population: 10,574
- White: 93.4% (9,881)
- Black or African American: 0.8% (83)
- American Indian and Alaska Native: 1.5% (162)
- Asian: 0.7% (69)
- Native Hawaiian and other Pacific Islander: 0.3% (27)
- 2 or more races: 2.6% (271)
- Some other Race: 0.8% (81)
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MagicalT // Wikimedia Commons

#38. Klickitat County

- Index: 0.136
- Total population: 21,721
- White: 92.9% (20,173)
- Black or African American: 0.7% (160)
- American Indian and Alaska Native: 2.5% (548)
- Asian: 0.7% (155)
- Native Hawaiian and other Pacific Islander: 0.0% (2)
- 2 or more races: 2.2% (473)
- Some other Race: 1.0% (210)
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U.S. Geological Survey // Wikimedia Commons

#37. Skamania County

- Index: 0.137
- Total population: 11,753
- White: 92.8% (10,911)
- Black or African American: 0.5% (58)
- American Indian and Alaska Native: 1.8% (213)
- Asian: 1.1% (131)
- Native Hawaiian and other Pacific Islander: 0.1% (14)
- 2 or more races: 2.3% (275)
- Some other Race: 1.3% (151)
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Williamborg // Wikimedia Commons

#36. Asotin County

- Index: 0.143
- Total population: 22,421
- White: 92.5% (20,731)
- Black or African American: 0.5% (116)
- American Indian and Alaska Native: 1.1% (256)
- Asian: 0.9% (192)
- Native Hawaiian and other Pacific Islander: 0.2% (51)
- 2 or more races: 3.9% (865)
- Some other Race: 0.9% (210)
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Jelson25 // Wikimedia Commons

#35. San Juan County

- Index: 0.147
- Total population: 16,788
- White: 92.3% (15,497)
- Black or African American: 0.9% (149)
- American Indian and Alaska Native: 1.0% (163)
- Asian: 1.3% (219)
- Native Hawaiian and other Pacific Islander: 0.2% (39)
- 2 or more races: 2.5% (418)
- Some other Race: 1.8% (303)

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Calvin Beale // Wikimedia Commons

#34. Garfield County

- Index: 0.162
- Total population: 2,230
- White: 91.3% (2,037)
- Black or African American: 0.0% (0)
- American Indian and Alaska Native: 0.0% (0)
- Asian: 3.2% (71)
- Native Hawaiian and other Pacific Islander: 0.0% (0)
- 2 or more races: 5.5% (122)
- Some other Race: 0.0% (0)
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Adbar // Wikimedia Commons

#33. Jefferson County

- Index: 0.172
- Total population: 31,285
- White: 90.9% (28,425)
- Black or African American: 0.6% (178)
- American Indian and Alaska Native: 2.0% (625)
- Asian: 1.6% (516)
- Native Hawaiian and other Pacific Islander: 0.2% (57)
- 2 or more races: 3.8% (1,195)
- Some other Race: 0.9% (289)
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Walter Siegmund // Wikimedia Commons

#32. Wahkiakum County

- Index: 0.173
- Total population: 4,268
- White: 90.8% (3,877)
- Black or African American: 1.3% (54)
- American Indian and Alaska Native: 0.7% (31)
- Asian: 1.9% (79)
- Native Hawaiian and other Pacific Islander: 0.0% (1)
- 2 or more races: 1.7% (72)
- Some other Race: 3.6% (154)
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Steven Pavlov // Wikimedia Commons

#31. Lewis County

- Index: 0.188
- Total population: 78,145
- White: 89.9% (70,251)
- Black or African American: 0.5% (414)
- American Indian and Alaska Native: 0.7% (508)
- Asian: 1.3% (1,024)
- Native Hawaiian and other Pacific Islander: 0.2% (174)
- 2 or more races: 5.3% (4,160)
- Some other Race: 2.1% (1,614)
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Ruthven78 // Wikimedia Commons

#30. Pend Oreille County

- Index: 0.190
- Total population: 13,377
- White: 89.9% (12,021)
- Black or African American: 0.4% (49)
- American Indian and Alaska Native: 3.9% (523)
- Asian: 1.0% (130)
- Native Hawaiian and other Pacific Islander: 0.0% (3)
- 2 or more races: 2.6% (352)
- Some other Race: 2.2% (299)

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John Stanton // Wikimedia Commons

#29. Columbia County

- Index: 0.198
- Total population: 3,992
- White: 89.4% (3,568)
- Black or African American: 0.9% (36)
- American Indian and Alaska Native: 0.2% (7)
- Asian: 1.8% (72)
- Native Hawaiian and other Pacific Islander: 1.1% (42)
- 2 or more races: 5.3% (212)
- Some other Race: 1.4% (55)
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BrandonHansen18 // Wikimedia Commons

#28. Stevens County

- Index: 0.202
- Total population: 44,655
- White: 89.1% (39,788)
- Black or African American: 0.4% (192)
- American Indian and Alaska Native: 5.0% (2,225)
- Asian: 0.6% (290)
- Native Hawaiian and other Pacific Islander: 0.1% (55)
- 2 or more races: 3.8% (1,715)
- Some other Race: 0.9% (390)
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Sam Beebe // Wikimedia Commons

#27. Cowlitz County

- Index: 0.205
- Total population: 106,778
- White: 89.0% (94,987)
- Black or African American: 0.8% (847)
- American Indian and Alaska Native: 1.5% (1,625)
- Asian: 1.3% (1,365)
- Native Hawaiian and other Pacific Islander: 0.2% (217)
- 2 or more races: 5.6% (6,000)
- Some other Race: 1.6% (1,737)
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MrX // Wikimedia Commons

#26. Kittitas County

- Index: 0.214
- Total population: 45,897
- White: 88.5% (40,611)
- Black or African American: 1.0% (443)
- American Indian and Alaska Native: 0.6% (285)
- Asian: 1.6% (729)
- Native Hawaiian and other Pacific Islander: 0.9% (401)
- 2 or more races: 3.7% (1,702)
- Some other Race: 3.8% (1,726)
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Ron Reiring // Wikicommons

#25. Spokane County

- Index: 0.226
- Total population: 505,505
- White: 87.8% (443,791)
- Black or African American: 1.7% (8,444)
- American Indian and Alaska Native: 1.3% (6,817)
- Asian: 2.3% (11,553)
- Native Hawaiian and other Pacific Islander: 0.6% (2,799)
- 2 or more races: 4.8% (24,212)
- Some other Race: 1.6% (7,889)

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Neonstar // Wikimedia Commons

#24. Clallam County

- Index: 0.226
- Total population: 75,392
- White: 87.7% (66,144)
- Black or African American: 1.1% (825)
- American Indian and Alaska Native: 4.9% (3,701)
- Asian: 1.7% (1,284)
- Native Hawaiian and other Pacific Islander: 0.0% (21)
- 2 or more races: 3.9% (2,904)
- Some other Race: 0.7% (513)
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Joe Mabel // Wikimedia Commons

#23. Grays Harbor County

- Index: 0.227
- Total population: 72,779
- White: 87.7% (63,802)
- Black or African American: 1.2% (859)
- American Indian and Alaska Native: 4.2% (3,075)
- Asian: 1.5% (1,096)
- Native Hawaiian and other Pacific Islander: 0.3% (200)
- 2 or more races: 4.3% (3,164)
- Some other Race: 0.8% (583)
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Sam Beebe // Wikimedia Commons

#22. Pacific County

- Index: 0.236
- Total population: 21,688
- White: 87.2% (18,907)
- Black or African American: 0.4% (76)
- American Indian and Alaska Native: 2.5% (549)
- Asian: 1.7% (365)
- Native Hawaiian and other Pacific Islander: 0.4% (86)
- 2 or more races: 3.8% (819)
- Some other Race: 4.1% (886)
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Steve Morgan // Wikimedia Commons

#21. Clark County

- Index: 0.279
- Total population: 473,252
- White: 84.6% (400,298)
- Black or African American: 1.8% (8,409)
- American Indian and Alaska Native: 0.6% (2,764)
- Asian: 4.6% (21,752)
- Native Hawaiian and other Pacific Islander: 0.8% (3,751)
- 2 or more races: 5.1% (24,064)
- Some other Race: 2.6% (12,214)
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Joe Mabel // Wikimedia Commons

#20. Island County

- Index: 0.279
- Total population: 82,866
- White: 84.6% (70,072)
- Black or African American: 3.1% (2,603)
- American Indian and Alaska Native: 1.0% (840)
- Asian: 4.9% (4,046)
- Native Hawaiian and other Pacific Islander: 0.4% (316)
- 2 or more races: 4.7% (3,875)
- Some other Race: 1.3% (1,114)

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Squarestate7 // Wikicommons

#19. Walla Walla County

- Index: 0.291
- Total population: 60,365
- White: 83.7% (50,534)
- Black or African American: 1.8% (1,074)
- American Indian and Alaska Native: 0.7% (393)
- Asian: 1.7% (999)
- Native Hawaiian and other Pacific Islander: 0.2% (99)
- 2 or more races: 4.6% (2,767)
- Some other Race: 7.5% (4,499)
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Ian Poellet // Wikimedia Commons

#18. Mason County

- Index: 0.296
- Total population: 63,804
- White: 83.5% (53,269)
- Black or African American: 1.3% (800)
- American Indian and Alaska Native: 2.5% (1,591)
- Asian: 1.2% (752)
- Native Hawaiian and other Pacific Islander: 0.4% (277)
- 2 or more races: 5.8% (3,717)
- Some other Race: 5.3% (3,398)
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Nick Kelly / Faithlife Corporation

#17. Whatcom County

- Index: 0.299
- Total population: 220,821
- White: 83.3% (184,006)
- Black or African American: 1.0% (2,204)
- American Indian and Alaska Native: 2.9% (6,437)
- Asian: 4.1% (9,120)
- Native Hawaiian and other Pacific Islander: 0.3% (668)
- 2 or more races: 4.7% (10,328)
- Some other Race: 3.6% (8,058)
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Ilyaunfois // Wikimedia Commons

#16. Whitman County

- Index: 0.311
- Total population: 49,231
- White: 82.4% (40,573)
- Black or African American: 2.2% (1,084)
- American Indian and Alaska Native: 0.3% (170)
- Asian: 8.5% (4,169)
- Native Hawaiian and other Pacific Islander: 0.2% (81)
- 2 or more races: 4.8% (2,355)
- Some other Race: 1.6% (799)
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formulanone // Wikimedia Commons

#15. Benton County

- Index: 0.315
- Total population: 197,518
- White: 82.1% (162,240)
- Black or African American: 1.6% (3,198)
- American Indian and Alaska Native: 0.8% (1,526)
- Asian: 2.6% (5,069)
- Native Hawaiian and other Pacific Islander: 0.1% (141)
- 2 or more races: 3.9% (7,705)
- Some other Race: 8.9% (17,639)

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Joe Mabel // Wikicommons

#14. Skagit County

- Index: 0.315
- Total population: 125,612
- White: 82.1% (103,131)
- Black or African American: 0.9% (1,110)
- American Indian and Alaska Native: 1.9% (2,356)
- Asian: 1.9% (2,388)
- Native Hawaiian and other Pacific Islander: 0.2% (311)
- 2 or more races: 3.9% (4,885)
- Some other Race: 9.1% (11,431)
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Joe Mabel // Wikicommons

#13. Thurston County

- Index: 0.328
- Total population: 279,711
- White: 81.5% (227,952)
- Black or African American: 3.2% (8,826)
- American Indian and Alaska Native: 1.4% (3,810)
- Asian: 5.7% (15,832)
- Native Hawaiian and other Pacific Islander: 0.8% (2,265)
- 2 or more races: 6.1% (16,970)
- Some other Race: 1.5% (4,056)
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Jennifer Gottwald // Wikicommons

#12. Chelan County

- Index: 0.334
- Total population: 76,229
- White: 80.4% (61,268)
- Black or African American: 0.6% (492)
- American Indian and Alaska Native: 0.9% (651)
- Asian: 0.8% (615)
- Native Hawaiian and other Pacific Islander: 0.0% (31)
- 2 or more races: 3.8% (2,890)
- Some other Race: 13.5% (10,282)
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Dcoetzee // Wikimedia Commons

#11. Kitsap County

- Index: 0.337
- Total population: 265,882
- White: 80.9% (215,015)
- Black or African American: 2.7% (7,129)
- American Indian and Alaska Native: 1.0% (2,596)
- Asian: 4.8% (12,876)
- Native Hawaiian and other Pacific Islander: 0.8% (2,174)
- 2 or more races: 7.6% (20,211)
- Some other Race: 2.2% (5,881)
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Michael S. Shannon // Wikimedia Commons

#10. Yakima County

- Index: 0.383
- Total population: 249,697
- White: 77.3% (192,911)
- Black or African American: 1.2% (2,918)
- American Indian and Alaska Native: 4.0% (10,004)
- Asian: 1.0% (2,447)
- Native Hawaiian and other Pacific Islander: 0.1% (288)
- 2 or more races: 3.3% (8,260)
- Some other Race: 13.2% (32,869)

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Kevmi // Wikimedia Commons

#9. Ferry County

- Index: 0.392
- Total population: 7,578
- White: 76.4% (5,789)
- Black or African American: 0.1% (11)
- American Indian and Alaska Native: 13.1% (994)
- Asian: 0.7% (53)
- Native Hawaiian and other Pacific Islander: 0.3% (20)
- 2 or more races: 8.6% (654)
- Some other Race: 0.8% (57)
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SounderBruce // Wikimedia Commons

#8. Snohomish County

- Index: 0.415
- Total population: 798,808
- White: 75.4% (601,915)
- Black or African American: 3.1% (24,369)
- American Indian and Alaska Native: 0.9% (7,353)
- Asian: 10.8% (86,121)
- Native Hawaiian and other Pacific Islander: 0.5% (4,197)
- 2 or more races: 6.3% (50,089)
- Some other Race: 3.1% (24,764)
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Bouldernavigator // Wikimedia Commons

#7. Okanogan County

- Index: 0.451
- Total population: 41,842
- White: 72.5% (30,320)
- Black or African American: 0.4% (186)
- American Indian and Alaska Native: 9.6% (4,019)
- Asian: 0.9% (358)
- Native Hawaiian and other Pacific Islander: 0.3% (106)
- 2 or more races: 5.5% (2,300)
- Some other Race: 10.9% (4,553)
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SounderBruce // Wikimedia Commons

#6. Pierce County

- Index: 0.451
- Total population: 877,013
- White: 72.9% (639,612)
- Black or African American: 6.8% (59,213)
- American Indian and Alaska Native: 1.3% (11,170)
- Asian: 6.3% (55,571)
- Native Hawaiian and other Pacific Islander: 1.5% (12,848)
- 2 or more races: 8.3% (72,509)
- Some other Race: 3.0% (26,090)
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Thayne Tuason // Wikimedia Commons

#5. Douglas County

- Index: 0.455
- Total population: 42,023
- White: 69.3% (29,137)
- Black or African American: 0.5% (203)
- American Indian and Alaska Native: 0.7% (300)
- Asian: 0.7% (305)
- Native Hawaiian and other Pacific Islander: 0.3% (112)
- 2 or more races: 3.4% (1,411)
- Some other Race: 25.1% (10,555)

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Williamborg // Wikimedia Commons

#4. Franklin County

- Index: 0.465
- Total population: 92,009
- White: 70.5% (64,838)
- Black or African American: 2.2% (2,068)
- American Indian and Alaska Native: 1.3% (1,163)
- Asian: 2.2% (2,016)
- Native Hawaiian and other Pacific Islander: 0.2% (195)
- 2 or more races: 4.8% (4,420)
- Some other Race: 18.8% (17,309)
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Irra // Shutterstock

#3. Grant County

- Index: 0.467
- Total population: 95,502
- White: 68.9% (65,761)
- Black or African American: 0.8% (810)
- American Indian and Alaska Native: 1.2% (1,146)
- Asian: 1.0% (946)
- Native Hawaiian and other Pacific Islander: 0.0% (36)
- 2 or more races: 4.2% (4,034)
- Some other Race: 23.8% (22,769)
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Joe Mabel // Wikimedia Commons

#2. Adams County

- Index: 0.502
- Total population: 19,594
- White: 65.1% (12,761)
- Black or African American: 1.0% (203)
- American Indian and Alaska Native: 4.1% (796)
- Asian: 0.8% (154)
- Native Hawaiian and other Pacific Islander: 0.2% (41)
- 2 or more races: 2.1% (405)
- Some other Race: 26.7% (5,234)
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kan_khampanya // Shutterstock

#1. King County

- Index: 0.550
- Total population: 2.2 million
- White: 64.0% (1,404,324)
- Black or African American: 6.5% (141,790)
- American Indian and Alaska Native: 0.6% (13,057)
- Asian: 17.6% (386,404)
- Native Hawaiian and other Pacific Islander: 0.8% (16,944)
- 2 or more races: 6.4% (140,606)
- Some other Race: 4.2% (92,377)

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