Counties with the highest STI rates in Washington

Emma Rubin // Stacker
- Chlamydia cases: 365.2 per 100K (#40 nationally, 28,431 cases)
- Gonorrhea cases: 146.4 per 100K (#31 nationally, 11,400 cases)
- Primary and secondary syphilis cases: 24.7 per 100K (#11 nationally, 1,920 cases)
State-level statistics
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- Chlamydia cases: 5.4 per 100K people (1 case)
- Gonorrhea cases: 0 cases
- Syphilis cases (non-congenital): 10.8 per 100K people (2 cases)
--- Primary and secondary syphilis: 10.8 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#39. San Juan County
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- Chlamydia cases: 85.3 per 100K people (2 cases)
- Gonorrhea cases: 0 cases
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#38. Garfield County
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- Chlamydia cases: 87.3 per 100K people (4 cases)
- Gonorrhea cases: 21.8 per 100K people (1 case)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#37. Wahkiakum County
Arpad Jasko // Shutterstock
- Chlamydia cases: 115.7 per 100K people (13 cases)
- Gonorrhea cases: 8.9 per 100K people (1 case)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#36. Lincoln County
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- Chlamydia cases: 121.1 per 100K people (29 cases)
- Gonorrhea cases: 20.9 per 100K people (5 cases)
- Syphilis cases (non-congenital): 8.4 per 100K people (2 cases)
--- Primary and secondary syphilis: 8.4 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#35. Pacific County
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- Chlamydia cases: 122.0 per 100K people (41 case)
- Gonorrhea cases: 14.9 per 100K people (5 cases)
- Syphilis cases (non-congenital): 3.0 per 100K people (1 case)
--- Primary and secondary syphilis: 3.0 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#34. Jefferson County
davidrh // Shutterstock
- Chlamydia cases: 123.7 per 100K people (5 cases)
- Gonorrhea cases: 24.7 per 100K people (1 case)
- Syphilis cases (non-congenital): 49.5 per 100K people (2 cases)
--- Primary and secondary syphilis: 24.7 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 24.7 per 100K people (1 case)
#33. Columbia County
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- Chlamydia cases: 156.1 per 100K people (19 cases)
- Gonorrhea cases: 16.4 per 100K people (2 cases)
- Syphilis cases (non-congenital): 16.4 per 100K people (2 cases)
--- Primary and secondary syphilis: 8.2 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 8.2 per 100K people (1 case)
#32. Skamania County
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- Chlamydia cases: 158.4 per 100K people (22 cases)
- Gonorrhea cases: 28.8 per 100K people (4 cases)
- Syphilis cases (non-congenital): 14.4 per 100K people (2 cases)
--- Primary and secondary syphilis: 14.4 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#31. Pend Oreille County
kathmanduphotog // Shutterstock
- Chlamydia cases: 165.0 per 100K people (12 cases)
- Gonorrhea cases: 55.0 per 100K people (4 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#30. Ferry County
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- Chlamydia cases: 189.8 per 100K people (90 cases)
- Gonorrhea cases: 42.2 per 100K people (20 cases)
- Syphilis cases (non-congenital): 2.1 per 100K people (1 case)
--- Primary and secondary syphilis: 2.1 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#29. Stevens County
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- Chlamydia cases: 198.2 per 100K people (155 cases)
- Gonorrhea cases: 35.8 per 100K people (28 cases)
- Syphilis cases (non-congenital): 9.0 per 100K people (7 cases)
--- Primary and secondary syphilis: 7.7 per 100K people (6 cases)
--- Nonprimary and nonsecondary early syphilis: 1.3 per 100K people (1 case)
#28. Clallam County
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- Chlamydia cases: 205.4 per 100K people (46 cases)
- Gonorrhea cases: 84.8 per 100K people (19 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#27. Asotin County
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- Chlamydia cases: 213.9 per 100K people (187 cases)
- Gonorrhea cases: 34.3 per 100K people (30 cases)
- Syphilis cases (non-congenital): 8.0 per 100K people (7 cases)
--- Primary and secondary syphilis: 5.7 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 2.3 per 100K people (2 cases)
#26. Island County
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- Chlamydia cases: 242.2 per 100K people (56 cases)
- Gonorrhea cases: 47.6 per 100K people (11 case)
- Syphilis cases (non-congenital): 8.7 per 100K people (2 cases)
--- Primary and secondary syphilis: 8.7 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#25. Klickitat County
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- Chlamydia cases: 246.3 per 100K people (105 cases)
- Gonorrhea cases: 58.6 per 100K people (25 cases)
- Syphilis cases (non-congenital): 23.5 per 100K people (10 cases)
--- Primary and secondary syphilis: 11.7 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 11.7 per 100K people (5 cases)
#24. Okanogan County
davidrh // Shutterstock
- Chlamydia cases: 255.9 per 100K people (216 cases)
- Gonorrhea cases: 74.6 per 100K people (63 cases)
- Syphilis cases (non-congenital): 17.8 per 100K people (15 cases)
--- Primary and secondary syphilis: 14.2 per 100K people (12 cases)
--- Nonprimary and nonsecondary early syphilis: 3.6 per 100K people (3 cases)
#23. Lewis County
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- Chlamydia cases: 285.5 per 100K people (2,380 cases)
- Gonorrhea cases: 95.7 per 100K people (798 cases)
- Syphilis cases (non-congenital): 20.4 per 100K people (170 cases)
--- Primary and secondary syphilis: 10.9 per 100K people (91 case)
--- Nonprimary and nonsecondary early syphilis: 9.5 per 100K people (79 cases)
#22. Snohomish County
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- Chlamydia cases: 295.3 per 100K people (386 cases)
- Gonorrhea cases: 80.3 per 100K people (105 cases)
- Syphilis cases (non-congenital): 14.5 per 100K people (19 cases)
--- Primary and secondary syphilis: 12.2 per 100K people (16 cases)
--- Nonprimary and nonsecondary early syphilis: 2.3 per 100K people (3 cases)
#21. Skagit County
seesaw1 // Shutterstock
- Chlamydia cases: 312.3 per 100K people (240 cases)
- Gonorrhea cases: 113.2 per 100K people (87 cases)
- Syphilis cases (non-congenital): 37.7 per 100K people (29 cases)
--- Primary and secondary syphilis: 28.6 per 100K people (22 cases)
--- Nonprimary and nonsecondary early syphilis: 9.1 per 100K people (7 cases)
#20. Grays Harbor County
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- Chlamydia cases: 321.2 per 100K people (957 cases)
- Gonorrhea cases: 102.0 per 100K people (304 cases)
- Syphilis cases (non-congenital): 19.5 per 100K people (58 cases)
--- Primary and secondary syphilis: 14.4 per 100K people (43 cases)
--- Nonprimary and nonsecondary early syphilis: 5.0 per 100K people (15 cases)
#19. Thurston County
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- Chlamydia cases: 326.0 per 100K people (746 cases)
- Gonorrhea cases: 94.0 per 100K people (215 cases)
- Syphilis cases (non-congenital): 10.5 per 100K people (24 cases)
--- Primary and secondary syphilis: 7.9 per 100K people (18 cases)
--- Nonprimary and nonsecondary early syphilis: 2.6 per 100K people (6 cases)
#18. Whatcom County
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- Chlamydia cases: 327.3 per 100K people (365 cases)
- Gonorrhea cases: 75.3 per 100K people (84 cases)
- Syphilis cases (non-congenital): 17.9 per 100K people (20 cases)
--- Primary and secondary syphilis: 13.5 per 100K people (15 cases)
--- Nonprimary and nonsecondary early syphilis: 4.5 per 100K people (5 cases)
#17. Cowlitz County
kan_khampanya // Shutterstock
- Chlamydia cases: 332.4 per 100K people (7,486 cases)
- Gonorrhea cases: 191.8 per 100K people (4,319 cases)
- Syphilis cases (non-congenital): 44.8 per 100K people (1,009 cases)
--- Primary and secondary syphilis: 27.1 per 100K people (611 case)
--- Nonprimary and nonsecondary early syphilis: 17.7 per 100K people (398 cases)
#16. King County
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- Chlamydia cases: 335.7 per 100K people (227 cases)
- Gonorrhea cases: 115.4 per 100K people (78 cases)
- Syphilis cases (non-congenital): 23.7 per 100K people (16 cases)
--- Primary and secondary syphilis: 16.3 per 100K people (11 case)
--- Nonprimary and nonsecondary early syphilis: 7.4 per 100K people (5 cases)
#15. Mason County
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- Chlamydia cases: 345.3 per 100K people (275 cases)
- Gonorrhea cases: 50.2 per 100K people (40 cases)
- Syphilis cases (non-congenital): 7.5 per 100K people (6 cases)
--- Primary and secondary syphilis: 6.3 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 1.3 per 100K people (1 case)
#14. Chelan County
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- Chlamydia cases: 369.2 per 100K people (168 cases)
- Gonorrhea cases: 35.2 per 100K people (16 cases)
- Syphilis cases (non-congenital): 6.6 per 100K people (3 cases)
--- Primary and secondary syphilis: 4.4 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 2.2 per 100K people (1 case)
#13. Kittitas County
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- Chlamydia cases: 376.8 per 100K people (1,927 cases)
- Gonorrhea cases: 124.4 per 100K people (636 cases)
- Syphilis cases (non-congenital): 22.5 per 100K people (115 cases)
--- Primary and secondary syphilis: 15.8 per 100K people (81 case)
--- Nonprimary and nonsecondary early syphilis: 6.6 per 100K people (34 cases)
#12. Clark County
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- Chlamydia cases: 388.6 per 100K people (1,066 cases)
- Gonorrhea cases: 97.0 per 100K people (266 cases)
- Syphilis cases (non-congenital): 13.1 per 100K people (36 cases)
--- Primary and secondary syphilis: 10.2 per 100K people (28 cases)
--- Nonprimary and nonsecondary early syphilis: 2.9 per 100K people (8 cases)
#11. Kitsap County
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- Chlamydia cases: 406.8 per 100K people (255 cases)
- Gonorrhea cases: 78.2 per 100K people (49 cases)
- Syphilis cases (non-congenital): 25.5 per 100K people (16 cases)
--- Primary and secondary syphilis: 22.3 per 100K people (14 cases)
--- Nonprimary and nonsecondary early syphilis: 3.2 per 100K people (2 cases)
#10. Walla Walla County
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- Chlamydia cases: 418.8 per 100K people (183 cases)
- Gonorrhea cases: 52.6 per 100K people (23 cases)
- Syphilis cases (non-congenital): 13.7 per 100K people (6 cases)
--- Primary and secondary syphilis: 6.9 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 6.9 per 100K people (3 cases)
#9. Douglas County
Irra // Shutterstock
- Chlamydia cases: 441.7 per 100K people (443 cases)
- Gonorrhea cases: 123.6 per 100K people (124 cases)
- Syphilis cases (non-congenital): 17.9 per 100K people (18 cases)
--- Primary and secondary syphilis: 10.0 per 100K people (10 cases)
--- Nonprimary and nonsecondary early syphilis: 8.0 per 100K people (8 cases)
#8. Grant County
Arpad Jasko // Shutterstock
- Chlamydia cases: 451.0 per 100K people (93 cases)
- Gonorrhea cases: 92.1 per 100K people (19 cases)
- Syphilis cases (non-congenital): 9.7 per 100K people (2 cases)
--- Primary and secondary syphilis: 9.7 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#7. Adams County
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- Chlamydia cases: 460.0 per 100K people (2,512 cases)
- Gonorrhea cases: 163.0 per 100K people (890 cases)
- Syphilis cases (non-congenital): 36.6 per 100K people (200 cases)
--- Primary and secondary syphilis: 20.7 per 100K people (113 cases)
--- Nonprimary and nonsecondary early syphilis: 15.9 per 100K people (87 cases)
#6. Spokane County
Victoria Ditkovsky // Shutterstock
- Chlamydia cases: 471.8 per 100K people (991 case)
- Gonorrhea cases: 163.8 per 100K people (344 cases)
- Syphilis cases (non-congenital): 33.3 per 100K people (70 cases)
--- Primary and secondary syphilis: 17.1 per 100K people (36 cases)
--- Nonprimary and nonsecondary early syphilis: 16.2 per 100K people (34 cases)
#5. Benton County
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- Chlamydia cases: 556.3 per 100K people (5,150 cases)
- Gonorrhea cases: 193.5 per 100K people (1,791 case)
- Syphilis cases (non-congenital): 37.4 per 100K people (346 cases)
--- Primary and secondary syphilis: 26.3 per 100K people (243 cases)
--- Nonprimary and nonsecondary early syphilis: 11.1 per 100K people (103 cases)
#4. Pierce County
davidrh // Shutterstock
- Chlamydia cases: 667.6 per 100K people (656 cases)
- Gonorrhea cases: 193.3 per 100K people (190 cases)
- Syphilis cases (non-congenital): 29.5 per 100K people (29 cases)
--- Primary and secondary syphilis: 16.3 per 100K people (16 cases)
--- Nonprimary and nonsecondary early syphilis: 13.2 per 100K people (13 cases)
#3. Franklin County
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- Chlamydia cases: 686.6 per 100K people (1,758 cases)
- Gonorrhea cases: 233.2 per 100K people (597 cases)
- Syphilis cases (non-congenital): 48.4 per 100K people (124 cases)
--- Primary and secondary syphilis: 32.4 per 100K people (83 cases)
--- Nonprimary and nonsecondary early syphilis: 16.0 per 100K people (41 case)
#2. Yakima County
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- Chlamydia cases: 741.5 per 100K people (355 cases)
- Gonorrhea cases: 77.3 per 100K people (37 cases)
- Syphilis cases (non-congenital): 6.3 per 100K people (3 cases)
--- Primary and secondary syphilis: 6.3 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases

This story features data reporting and writing by Emma Rubin and is part of a series utilizing data automation across 49 states.

#1. Whitman County
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