Counties with the highest STI rates in Wisconsin

Emma Rubin // Stacker
- Chlamydia cases: 435.7 per 100K (#32 nationally, 25,676 cases)
- Gonorrhea cases: 148.3 per 100K (#30 nationally, 8,740 cases)
- Primary and secondary syphilis cases: 12.6 per 100K (#29 nationally, 742 cases)
State-level statistics
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- Chlamydia cases: 187.9 per 100K people (25 cases)
- Gonorrhea cases: 52.6 per 100K people (7 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#50. Buffalo County
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- Chlamydia cases: 191.0 per 100K people (58 cases)
- Gonorrhea cases: 42.8 per 100K people (13 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#49. Door County
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- Chlamydia cases: 191.3 per 100K people (35 cases)
- Gonorrhea cases: 109.3 per 100K people (20 cases)
- Syphilis cases (non-congenital): 76.5 per 100K people (14 cases)
--- Primary and secondary syphilis: 54.7 per 100K people (10 cases)
--- Nonprimary and nonsecondary early syphilis: 21.9 per 100K people (4 cases)
#48. Sawyer County
Barbara Smits // Shutterstock
- Chlamydia cases: 196.6 per 100K people (33 cases)
- Gonorrhea cases: 17.9 per 100K people (3 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#47. Lafayette County
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- Chlamydia cases: 197.4 per 100K people (73 cases)
- Gonorrhea cases: 24.3 per 100K people (9 cases)
- Syphilis cases (non-congenital): 2.7 per 100K people (1 case)
--- Primary and secondary syphilis: 2.7 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#46. Green County
Sam Wagner // Shutterstock
- Chlamydia cases: 203.6 per 100K people (43 cases)
- Gonorrhea cases: 66.3 per 100K people (14 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#45. Jackson County
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- Chlamydia cases: 209.0 per 100K people (35 cases)
- Gonorrhea cases: 47.8 per 100K people (8 cases)
- Syphilis cases (non-congenital): 6.0 per 100K people (1 case)
--- Primary and secondary syphilis: 6.0 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#44. Burnett County
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- Chlamydia cases: 209.3 per 100K people (43 cases)
- Gonorrhea cases: 38.9 per 100K people (8 cases)
- Syphilis cases (non-congenital): 9.7 per 100K people (2 cases)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 9.7 per 100K people (2 cases)
#43. Kewaunee County
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- Chlamydia cases: 213.4 per 100K people (84 cases)
- Gonorrhea cases: 22.9 per 100K people (9 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#42. Oconto County
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- Chlamydia cases: 215.4 per 100K people (144 cases)
- Gonorrhea cases: 79.3 per 100K people (53 cases)
- Syphilis cases (non-congenital): 1.5 per 100K people (1 case)
--- Primary and secondary syphilis: 1.5 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#41. Chippewa County
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- Chlamydia cases: 216.0 per 100K people (92 cases)
- Gonorrhea cases: 42.3 per 100K people (18 cases)
- Syphilis cases (non-congenital): 4.7 per 100K people (2 cases)
--- Primary and secondary syphilis: 4.7 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#40. Pierce County
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- Chlamydia cases: 228.4 per 100K people (120 cases)
- Gonorrhea cases: 40.0 per 100K people (21 case)
- Syphilis cases (non-congenital): 7.6 per 100K people (4 cases)
--- Primary and secondary syphilis: 5.7 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 1.9 per 100K people (1 case)
#39. Calumet County
Henryk Sadura // Shutterstock
- Chlamydia cases: 230.7 per 100K people (45 cases)
- Gonorrhea cases: 15.4 per 100K people (3 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#38. Langlade County
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- Chlamydia cases: 231.1 per 100K people (71 case)
- Gonorrhea cases: 39.1 per 100K people (12 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#37. Trempealeau County
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- Chlamydia cases: 238.3 per 100K people (68 cases)
- Gonorrhea cases: 14.0 per 100K people (4 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#36. Lincoln County
John Touscany // Shutterstock
- Chlamydia cases: 240.3 per 100K people (178 cases)
- Gonorrhea cases: 54.0 per 100K people (40 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#35. Wood County
Suzanne Tucker // Shutterstock
- Chlamydia cases: 242.4 per 100K people (125 cases)
- Gonorrhea cases: 33.0 per 100K people (17 cases)
- Syphilis cases (non-congenital): 3.9 per 100K people (2 cases)
--- Primary and secondary syphilis: 3.9 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#34. Waupaca County
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- Chlamydia cases: 246.2 per 100K people (144 cases)
- Gonorrhea cases: 53.0 per 100K people (31 case)
- Syphilis cases (non-congenital): 10.3 per 100K people (6 cases)
--- Primary and secondary syphilis: 8.5 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 1.7 per 100K people (1 case)
#33. Columbia County
Emmy_ann // Shutterstock
- Chlamydia cases: 247.8 per 100K people (35 cases)
- Gonorrhea cases: 42.5 per 100K people (6 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#32. Rusk County
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- Chlamydia cases: 250.4 per 100K people (117 cases)
- Gonorrhea cases: 59.9 per 100K people (28 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
#31. Barron County
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- Chlamydia cases: 257.2 per 100K people (354 cases)
- Gonorrhea cases: 67.6 per 100K people (93 cases)
- Syphilis cases (non-congenital): .7 per 100K people (1 case)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: .7 per 100K people (1 case)
#30. Marathon County
B View // Shutterstock
- Chlamydia cases: 259.0 per 100K people (16 cases)
- Gonorrhea cases: 0 cases
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#29. Iron County
spiritbridge // Shutterstock
- Chlamydia cases: 260.2 per 100K people (221 case)
- Gonorrhea cases: 51.8 per 100K people (44 cases)
- Syphilis cases (non-congenital): 2.4 per 100K people (2 cases)
--- Primary and secondary syphilis: 2.4 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#28. Jefferson County
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- Chlamydia cases: 261.0 per 100K people (136 cases)
- Gonorrhea cases: 48.0 per 100K people (25 cases)
- Syphilis cases (non-congenital): 7.7 per 100K people (4 cases)
--- Primary and secondary syphilis: 7.7 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#27. Grant County
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- Chlamydia cases: 264.3 per 100K people (108 cases)
- Gonorrhea cases: 34.3 per 100K people (14 cases)
- Syphilis cases (non-congenital): 2.4 per 100K people (1 case)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 2.4 per 100K people (1 case)
#26. Shawano County
Wirestock Creators // Shutterstock
- Chlamydia cases: 267.3 per 100K people (46 cases)
- Gonorrhea cases: 52.3 per 100K people (9 cases)
- Syphilis cases (non-congenital): 11.6 per 100K people (2 cases)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 11.6 per 100K people (2 cases)
#25. Richland County
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- Chlamydia cases: 289.3 per 100K people (309 cases)
- Gonorrhea cases: 46.8 per 100K people (50 cases)
- Syphilis cases (non-congenital): 6.6 per 100K people (7 cases)
--- Primary and secondary syphilis: 5.6 per 100K people (6 cases)
--- Nonprimary and nonsecondary early syphilis: .9 per 100K people (1 case)
#24. Walworth County
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- Chlamydia cases: 289.6 per 100K people (236 cases)
- Gonorrhea cases: 49.1 per 100K people (40 cases)
- Syphilis cases (non-congenital): 4.9 per 100K people (4 cases)
--- Primary and secondary syphilis: 2.5 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 2.5 per 100K people (2 cases)
#23. Manitowoc County
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- Chlamydia cases: 291.8 per 100K people (47 cases)
- Gonorrhea cases: 31.0 per 100K people (5 cases)
- Syphilis cases (non-congenital): 12.4 per 100K people (2 cases)
--- Primary and secondary syphilis: 12.4 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#22. Ashland County
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- Chlamydia cases: 293.9 per 100K people (346 cases)
- Gonorrhea cases: 91.7 per 100K people (108 cases)
- Syphilis cases (non-congenital): 17.8 per 100K people (21 case)
--- Primary and secondary syphilis: 11.9 per 100K people (14 cases)
--- Nonprimary and nonsecondary early syphilis: 5.9 per 100K people (7 cases)
#21. Sheboygan County
Patrick Lansing // Shutterstock
- Chlamydia cases: 311.8 per 100K people (142 cases)
- Gonorrhea cases: 79.0 per 100K people (36 cases)
- Syphilis cases (non-congenital): 2.2 per 100K people (1 case)
--- Primary and secondary syphilis: 2.2 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#20. Dunn County
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- Chlamydia cases: 317.6 per 100K people (133 cases)
- Gonorrhea cases: 28.7 per 100K people (12 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#19. Marinette County
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- Chlamydia cases: 318.5 per 100K people (610 cases)
- Gonorrhea cases: 82.0 per 100K people (157 cases)
- Syphilis cases (non-congenital): 7.3 per 100K people (14 cases)
--- Primary and secondary syphilis: 4.2 per 100K people (8 cases)
--- Nonprimary and nonsecondary early syphilis: 3.1 per 100K people (6 cases)
#18. Outagamie County
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- Chlamydia cases: 337.7 per 100K people (156 cases)
- Gonorrhea cases: 52.0 per 100K people (24 cases)
- Syphilis cases (non-congenital): 8.7 per 100K people (4 cases)
--- Primary and secondary syphilis: 6.5 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 2.2 per 100K people (1 case)
#17. Monroe County
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- Chlamydia cases: 348.4 per 100K people (154 cases)
- Gonorrhea cases: 119.9 per 100K people (53 cases)
- Syphilis cases (non-congenital): 6.8 per 100K people (3 cases)
--- Primary and secondary syphilis: 6.8 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#16. Douglas County
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- Chlamydia cases: 351.7 per 100K people (367 cases)
- Gonorrhea cases: 97.7 per 100K people (102 cases)
- Syphilis cases (non-congenital): 4.8 per 100K people (5 cases)
--- Primary and secondary syphilis: 4.8 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#15. Fond Du Lac County
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- Chlamydia cases: 357.2 per 100K people (319 cases)
- Gonorrhea cases: 42.5 per 100K people (38 cases)
- Syphilis cases (non-congenital): 5.6 per 100K people (5 cases)
--- Primary and secondary syphilis: 4.5 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 1.1 per 100K people (1 case)
#14. Dodge County
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- Chlamydia cases: 365.6 per 100K people (98 cases)
- Gonorrhea cases: 26.1 per 100K people (7 cases)
- Syphilis cases (non-congenital): 3.7 per 100K people (1 case)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 3.7 per 100K people (1 case)
#13. Juneau County
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- Chlamydia cases: 378.6 per 100K people (403 cases)
- Gonorrhea cases: 117.4 per 100K people (125 cases)
- Syphilis cases (non-congenital): 7.5 per 100K people (8 cases)
--- Primary and secondary syphilis: 5.6 per 100K people (6 cases)
--- Nonprimary and nonsecondary early syphilis: 1.9 per 100K people (2 cases)
#12. Eau Claire County
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- Chlamydia cases: 392.7 per 100K people (258 cases)
- Gonorrhea cases: 73.1 per 100K people (48 cases)
- Syphilis cases (non-congenital): 4.6 per 100K people (3 cases)
--- Primary and secondary syphilis: 1.5 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 3.0 per 100K people (2 cases)
#11. Sauk County
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- Chlamydia cases: 414.4 per 100K people (292 cases)
- Gonorrhea cases: 52.5 per 100K people (37 cases)
- Syphilis cases (non-congenital): 2.8 per 100K people (2 cases)
--- Primary and secondary syphilis: 2.8 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#10. Portage County
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- Chlamydia cases: 428.8 per 100K people (736 cases)
- Gonorrhea cases: 125.9 per 100K people (216 cases)
- Syphilis cases (non-congenital): 4.1 per 100K people (7 cases)
--- Primary and secondary syphilis: 2.9 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 1.2 per 100K people (2 cases)
#9. Winnebago County
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- Chlamydia cases: 467.0 per 100K people (788 cases)
- Gonorrhea cases: 155.3 per 100K people (262 cases)
- Syphilis cases (non-congenital): 7.7 per 100K people (13 cases)
--- Primary and secondary syphilis: 5.9 per 100K people (10 cases)
--- Nonprimary and nonsecondary early syphilis: 1.8 per 100K people (3 cases)
#8. Kenosha County
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- Chlamydia cases: 475.5 per 100K people (1,282 cases)
- Gonorrhea cases: 133.2 per 100K people (359 cases)
- Syphilis cases (non-congenital): 7.0 per 100K people (19 cases)
--- Primary and secondary syphilis: 4.8 per 100K people (13 cases)
--- Nonprimary and nonsecondary early syphilis: 2.2 per 100K people (6 cases)
#7. Brown County
Paul Brady Photography // Shutterstock
- Chlamydia cases: 512.3 per 100K people (2,889 cases)
- Gonorrhea cases: 199.7 per 100K people (1,126 cases)
- Syphilis cases (non-congenital): 14.5 per 100K people (82 cases)
--- Primary and secondary syphilis: 8.5 per 100K people (48 cases)
--- Nonprimary and nonsecondary early syphilis: 6.0 per 100K people (34 cases)
#6. Dane County
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- Chlamydia cases: 520.1 per 100K people (855 cases)
- Gonorrhea cases: 270.7 per 100K people (445 cases)
- Syphilis cases (non-congenital): 4.3 per 100K people (7 cases)
--- Primary and secondary syphilis: 2.4 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 1.8 per 100K people (3 cases)
#5. Rock County
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- Chlamydia cases: 532.2 per 100K people (641 case)
- Gonorrhea cases: 131.2 per 100K people (158 cases)
- Syphilis cases (non-congenital): 8.3 per 100K people (10 cases)
--- Primary and secondary syphilis: 5.8 per 100K people (7 cases)
--- Nonprimary and nonsecondary early syphilis: 2.5 per 100K people (3 cases)
#4. La Crosse County
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- Chlamydia cases: 632.3 per 100K people (1,245 cases)
- Gonorrhea cases: 279.3 per 100K people (550 cases)
- Syphilis cases (non-congenital): 15.2 per 100K people (30 cases)
--- Primary and secondary syphilis: 9.6 per 100K people (19 cases)
--- Nonprimary and nonsecondary early syphilis: 5.6 per 100K people (11 case)
#3. Racine County
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- Chlamydia cases: 979.2 per 100K people (42 cases)
- Gonorrhea cases: 139.9 per 100K people (6 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#2. Menominee County
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- Chlamydia cases: 1,175.8 per 100K people (10,912 cases)
- Gonorrhea cases: 594.6 per 100K people (5,518 cases)
- Syphilis cases (non-congenital): 82.5 per 100K people (766 cases)
--- Primary and secondary syphilis: 53.9 per 100K people (500 cases)
--- Nonprimary and nonsecondary early syphilis: 28.7 per 100K people (266 cases)

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

#1. Milwaukee County
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