Counties with the highest STI rates in Indiana

Emma Rubin // Stacker
- Chlamydia cases: 495.2 per 100K (#21 nationally, 33,834 cases)
- Gonorrhea cases: 181.4 per 100K (#23 nationally, 12,396 cases)
- Primary and secondary syphilis cases: 10.0 per 100K (#41 nationally, 686 cases)
State-level statistics
Roberto Galan // Shutterstock
- Chlamydia cases: 269.8 per 100K people (56 cases)
- Gonorrhea cases: 159.0 per 100K people (33 cases)
- Syphilis cases (non-congenital): 4.8 per 100K people (1 case)
--- Primary and secondary syphilis: 4.8 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#50. Sullivan County
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- Chlamydia cases: 277.4 per 100K people (55 cases)
- Gonorrhea cases: 55.5 per 100K people (11 case)
- Syphilis cases (non-congenital): 5.0 per 100K people (1 case)
--- Primary and secondary syphilis: 5.0 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#49. Orange County
Roberto Galan // Shutterstock
- Chlamydia cases: 278.5 per 100K people (93 cases)
- Gonorrhea cases: 53.9 per 100K people (18 cases)
- Syphilis cases (non-congenital): 18.0 per 100K people (6 cases)
--- Primary and secondary syphilis: 12.0 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 6.0 per 100K people (2 cases)
#48. Daviess County
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- Chlamydia cases: 279.5 per 100K people (487 cases)
- Gonorrhea cases: 62.0 per 100K people (108 cases)
- Syphilis cases (non-congenital): 6.9 per 100K people (12 cases)
--- Primary and secondary syphilis: 5.2 per 100K people (9 cases)
--- Nonprimary and nonsecondary early syphilis: 1.7 per 100K people (3 cases)
#47. Porter County
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- Chlamydia cases: 280.9 per 100K people (77 cases)
- Gonorrhea cases: 58.4 per 100K people (16 cases)
- Syphilis cases (non-congenital): 3.6 per 100K people (1 case)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 3.6 per 100K people (1 case)
#46. Jennings County
Roberto Galan // Shutterstock
- Chlamydia cases: 282.5 per 100K people (66 cases)
- Gonorrhea cases: 77.1 per 100K people (18 cases)
- Syphilis cases (non-congenital): 12.8 per 100K people (3 cases)
--- Primary and secondary syphilis: 4.3 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 8.6 per 100K people (2 cases)
#45. Fayette County
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- Chlamydia cases: 282.7 per 100K people (102 cases)
- Gonorrhea cases: 121.9 per 100K people (44 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#44. Miami County
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- Chlamydia cases: 289.9 per 100K people (187 cases)
- Gonorrhea cases: 108.5 per 100K people (70 cases)
- Syphilis cases (non-congenital): 12.4 per 100K people (8 cases)
--- Primary and secondary syphilis: 9.3 per 100K people (6 cases)
--- Nonprimary and nonsecondary early syphilis: 3.1 per 100K people (2 cases)
#43. Warrick County
Roberto Galan // Shutterstock
- Chlamydia cases: 295.3 per 100K people (133 cases)
- Gonorrhea cases: 71.0 per 100K people (32 cases)
- Syphilis cases (non-congenital): 13.3 per 100K people (6 cases)
--- Primary and secondary syphilis: 11.1 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 2.2 per 100K people (1 case)
#42. Shelby County
Roberto Galan // Shutterstock
- Chlamydia cases: 296.3 per 100K people (60 cases)
- Gonorrhea cases: 69.1 per 100K people (14 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#41. Jay County
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- Chlamydia cases: 302.2 per 100K people (100 cases)
- Gonorrhea cases: 42.3 per 100K people (14 cases)
- Syphilis cases (non-congenital): 9.1 per 100K people (3 cases)
--- Primary and secondary syphilis: 6.0 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 3.0 per 100K people (1 case)
#40. Jasper County
shutter_breaker // Shutterstock
- Chlamydia cases: 307.9 per 100K people (75 cases)
- Gonorrhea cases: 131.4 per 100K people (32 cases)
- Syphilis cases (non-congenital): 8.2 per 100K people (2 cases)
--- Primary and secondary syphilis: 4.1 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 4.1 per 100K people (1 case)
#39. Scott County
Roberto Galan // Shutterstock
- Chlamydia cases: 309.8 per 100K people (27 cases)
- Gonorrhea cases: 45.9 per 100K people (4 cases)
- Syphilis cases (non-congenital): 11.5 per 100K people (1 case)
--- Primary and secondary syphilis: 11.5 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#38. Benton County
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- Chlamydia cases: 315.3 per 100K people (83 cases)
- Gonorrhea cases: 79.8 per 100K people (21 case)
- Syphilis cases (non-congenital): 15.2 per 100K people (4 cases)
--- Primary and secondary syphilis: 11.4 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 3.8 per 100K people (1 case)
#37. Decatur County
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- Chlamydia cases: 315.7 per 100K people (77 cases)
- Gonorrhea cases: 114.8 per 100K people (28 cases)
- Syphilis cases (non-congenital): 8.2 per 100K people (2 cases)
--- Primary and secondary syphilis: 4.1 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 4.1 per 100K people (1 case)
#36. Randolph County
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- Chlamydia cases: 316.8 per 100K people (105 cases)
- Gonorrhea cases: 57.3 per 100K people (19 cases)
- Syphilis cases (non-congenital): 3.0 per 100K people (1 case)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 3.0 per 100K people (1 case)
#35. Jefferson County
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- Chlamydia cases: 316.9 per 100K people (146 cases)
- Gonorrhea cases: 73.8 per 100K people (34 cases)
- Syphilis cases (non-congenital): 10.9 per 100K people (5 cases)
--- Primary and secondary syphilis: 6.5 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 4.3 per 100K people (2 cases)
#34. Jackson County
Roberto Galan // Shutterstock
- Chlamydia cases: 318.1 per 100K people (84 cases)
- Gonorrhea cases: 193.1 per 100K people (51 case)
- Syphilis cases (non-congenital): 3.8 per 100K people (1 case)
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 3.8 per 100K people (1 case)
#33. Clay County
Roberto Galan // Shutterstock
- Chlamydia cases: 321.6 per 100K people (99 cases)
- Gonorrhea cases: 152.7 per 100K people (47 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#32. Greene County
Roberto Galan // Shutterstock
- Chlamydia cases: 326.2 per 100K people (536 cases)
- Gonorrhea cases: 99.8 per 100K people (164 cases)
- Syphilis cases (non-congenital): 14.0 per 100K people (23 cases)
--- Primary and secondary syphilis: 7.3 per 100K people (12 cases)
--- Nonprimary and nonsecondary early syphilis: 6.7 per 100K people (11 case)
#31. Johnson County
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- Chlamydia cases: 328.0 per 100K people (108 cases)
- Gonorrhea cases: 145.8 per 100K people (48 cases)
- Syphilis cases (non-congenital): 15.2 per 100K people (5 cases)
--- Primary and secondary syphilis: 12.1 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 3.0 per 100K people (1 case)
#30. Gibson County
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- Chlamydia cases: 332.1 per 100K people (266 cases)
- Gonorrhea cases: 107.4 per 100K people (86 cases)
- Syphilis cases (non-congenital): 7.5 per 100K people (6 cases)
--- Primary and secondary syphilis: 2.5 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 5.0 per 100K people (4 cases)
#29. Kosciusko County
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- Chlamydia cases: 338.0 per 100K people (125 cases)
- Gonorrhea cases: 121.7 per 100K people (45 cases)
- Syphilis cases (non-congenital): 16.2 per 100K people (6 cases)
--- Primary and secondary syphilis: 2.7 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 13.5 per 100K people (5 cases)
#28. Putnam County
Roberto Galan // Shutterstock
- Chlamydia cases: 339.2 per 100K people (147 cases)
- Gonorrhea cases: 96.9 per 100K people (42 cases)
- Syphilis cases (non-congenital): 0 cases
--- Primary and secondary syphilis: 0 cases
--- Nonprimary and nonsecondary early syphilis: 0 cases
#27. Dekalb County
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- Chlamydia cases: 359.2 per 100K people (289 cases)
- Gonorrhea cases: 172.8 per 100K people (139 cases)
- Syphilis cases (non-congenital): 21.1 per 100K people (17 cases)
--- Primary and secondary syphilis: 13.7 per 100K people (11 case)
--- Nonprimary and nonsecondary early syphilis: 7.5 per 100K people (6 cases)
#26. Floyd County
Felix Mizioznikov // Shutterstock
- Chlamydia cases: 361.0 per 100K people (89 cases)
- Gonorrhea cases: 69.0 per 100K people (17 cases)
- Syphilis cases (non-congenital): 8.1 per 100K people (2 cases)
--- Primary and secondary syphilis: 4.1 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 4.1 per 100K people (1 case)
#25. White County
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- Chlamydia cases: 363.7 per 100K people (300 cases)
- Gonorrhea cases: 121.2 per 100K people (100 cases)
- Syphilis cases (non-congenital): 6.1 per 100K people (5 cases)
--- Primary and secondary syphilis: 2.4 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 3.6 per 100K people (3 cases)
#24. Bartholomew County
Roberto Galan // Shutterstock
- Chlamydia cases: 364.2 per 100K people (172 cases)
- Gonorrhea cases: 133.4 per 100K people (63 cases)
- Syphilis cases (non-congenital): 4.2 per 100K people (2 cases)
--- Primary and secondary syphilis: 2.1 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 2.1 per 100K people (1 case)
#23. Noble County
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- Chlamydia cases: 392.1 per 100K people (141 case)
- Gonorrhea cases: 122.4 per 100K people (44 cases)
- Syphilis cases (non-congenital): 13.9 per 100K people (5 cases)
--- Primary and secondary syphilis: 11.1 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 2.8 per 100K people (1 case)
#22. Knox County
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- Chlamydia cases: 432.5 per 100K people (143 cases)
- Gonorrhea cases: 151.2 per 100K people (50 cases)
- Syphilis cases (non-congenital): 15.1 per 100K people (5 cases)
--- Primary and secondary syphilis: 12.1 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 3.0 per 100K people (1 case)
#21. Clinton County
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- Chlamydia cases: 435.9 per 100K people (535 cases)
- Gonorrhea cases: 174.4 per 100K people (214 cases)
- Syphilis cases (non-congenital): 25.3 per 100K people (31 case)
--- Primary and secondary syphilis: 16.3 per 100K people (20 cases)
--- Nonprimary and nonsecondary early syphilis: 9.0 per 100K people (11 case)
#20. Clark County
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- Chlamydia cases: 446.7 per 100K people (502 cases)
- Gonorrhea cases: 160.2 per 100K people (180 cases)
- Syphilis cases (non-congenital): 6.2 per 100K people (7 cases)
--- Primary and secondary syphilis: 3.6 per 100K people (4 cases)
--- Nonprimary and nonsecondary early syphilis: 2.7 per 100K people (3 cases)
#19. Laporte County
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- Chlamydia cases: 459.8 per 100K people (175 cases)
- Gonorrhea cases: 89.3 per 100K people (34 cases)
- Syphilis cases (non-congenital): 7.9 per 100K people (3 cases)
--- Primary and secondary syphilis: 5.3 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 2.6 per 100K people (1 case)
#18. Montgomery County
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- Chlamydia cases: 463.2 per 100K people (174 cases)
- Gonorrhea cases: 135.8 per 100K people (51 case)
- Syphilis cases (non-congenital): 5.3 per 100K people (2 cases)
--- Primary and secondary syphilis: 5.3 per 100K people (2 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#17. Cass County
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- Chlamydia cases: 472.5 per 100K people (314 cases)
- Gonorrhea cases: 237.8 per 100K people (158 cases)
- Syphilis cases (non-congenital): 19.6 per 100K people (13 cases)
--- Primary and secondary syphilis: 10.5 per 100K people (7 cases)
--- Nonprimary and nonsecondary early syphilis: 9.0 per 100K people (6 cases)
#16. Wayne County
Kenneth Keifer // Shutterstock
- Chlamydia cases: 493.1 per 100K people (81 case)
- Gonorrhea cases: 85.2 per 100K people (14 cases)
- Syphilis cases (non-congenital): 18.3 per 100K people (3 cases)
--- Primary and secondary syphilis: 18.3 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#15. Fountain County
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- Chlamydia cases: 501.6 per 100K people (1,038 cases)
- Gonorrhea cases: 185.1 per 100K people (383 cases)
- Syphilis cases (non-congenital): 10.6 per 100K people (22 cases)
--- Primary and secondary syphilis: 5.3 per 100K people (11 case)
--- Nonprimary and nonsecondary early syphilis: 5.3 per 100K people (11 case)
#14. Elkhart County
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- Chlamydia cases: 505.9 per 100K people (83 cases)
- Gonorrhea cases: 121.9 per 100K people (20 cases)
- Syphilis cases (non-congenital): 6.1 per 100K people (1 case)
--- Primary and secondary syphilis: 6.1 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 0 cases
#13. Parke County
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- Chlamydia cases: 526.8 per 100K people (689 cases)
- Gonorrhea cases: 208.0 per 100K people (272 cases)
- Syphilis cases (non-congenital): 18.4 per 100K people (24 cases)
--- Primary and secondary syphilis: 12.2 per 100K people (16 cases)
--- Nonprimary and nonsecondary early syphilis: 6.1 per 100K people (8 cases)
#12. Madison County
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- Chlamydia cases: 539.9 per 100K people (1,010 cases)
- Gonorrhea cases: 195.6 per 100K people (366 cases)
- Syphilis cases (non-congenital): 27.8 per 100K people (52 cases)
--- Primary and secondary syphilis: 17.1 per 100K people (32 cases)
--- Nonprimary and nonsecondary early syphilis: 10.7 per 100K people (20 cases)
#11. Tippecanoe County
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- Chlamydia cases: 577.4 per 100K people (612 cases)
- Gonorrhea cases: 315.1 per 100K people (334 cases)
- Syphilis cases (non-congenital): 13.2 per 100K people (14 cases)
--- Primary and secondary syphilis: 4.7 per 100K people (5 cases)
--- Nonprimary and nonsecondary early syphilis: 8.5 per 100K people (9 cases)
#10. Vigo County
Roberto Galan // Shutterstock
- Chlamydia cases: 579.2 per 100K people (648 cases)
- Gonorrhea cases: 245.8 per 100K people (275 cases)
- Syphilis cases (non-congenital): 9.8 per 100K people (11 case)
--- Primary and secondary syphilis: 7.2 per 100K people (8 cases)
--- Nonprimary and nonsecondary early syphilis: 2.7 per 100K people (3 cases)
#9. Delaware County
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- Chlamydia cases: 581.7 per 100K people (2,900 cases)
- Gonorrhea cases: 237.5 per 100K people (1,184 cases)
- Syphilis cases (non-congenital): 16.6 per 100K people (83 cases)
--- Primary and secondary syphilis: 11.4 per 100K people (57 cases)
--- Nonprimary and nonsecondary early syphilis: 5.2 per 100K people (26 cases)
#8. Lake County
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- Chlamydia cases: 582.8 per 100K people (2,265 cases)
- Gonorrhea cases: 225.7 per 100K people (877 cases)
- Syphilis cases (non-congenital): 7.5 per 100K people (29 cases)
--- Primary and secondary syphilis: 2.3 per 100K people (9 cases)
--- Nonprimary and nonsecondary early syphilis: 5.1 per 100K people (20 cases)
#7. Allen County
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- Chlamydia cases: 589.1 per 100K people (824 cases)
- Gonorrhea cases: 181.6 per 100K people (254 cases)
- Syphilis cases (non-congenital): 7.9 per 100K people (11 case)
--- Primary and secondary syphilis: 2.1 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 5.7 per 100K people (8 cases)
#6. Monroe County
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- Chlamydia cases: 590.1 per 100K people (391 case)
- Gonorrhea cases: 265.6 per 100K people (176 cases)
- Syphilis cases (non-congenital): 9.1 per 100K people (6 cases)
--- Primary and secondary syphilis: 4.5 per 100K people (3 cases)
--- Nonprimary and nonsecondary early syphilis: 4.5 per 100K people (3 cases)
#5. Grant County
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- Chlamydia cases: 608.2 per 100K people (509 cases)
- Gonorrhea cases: 264.1 per 100K people (221 case)
- Syphilis cases (non-congenital): 2.4 per 100K people (2 cases)
--- Primary and secondary syphilis: 1.2 per 100K people (1 case)
--- Nonprimary and nonsecondary early syphilis: 1.2 per 100K people (1 case)
#4. Howard County
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- Chlamydia cases: 718.9 per 100K people (1,294 cases)
- Gonorrhea cases: 429.5 per 100K people (773 cases)
- Syphilis cases (non-congenital): 43.3 per 100K people (78 cases)
--- Primary and secondary syphilis: 28.3 per 100K people (51 case)
--- Nonprimary and nonsecondary early syphilis: 15.0 per 100K people (27 cases)
#3. Vanderburgh County
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- Chlamydia cases: 732.1 per 100K people (1,993 cases)
- Gonorrhea cases: 356.0 per 100K people (969 cases)
- Syphilis cases (non-congenital): 14.0 per 100K people (38 cases)
--- Primary and secondary syphilis: 5.9 per 100K people (16 cases)
--- Nonprimary and nonsecondary early syphilis: 8.1 per 100K people (22 cases)
#2. St. Joseph County
Sean Pavone // Shutterstock
- Chlamydia cases: 1,102.7 per 100K people (10,708 cases)
- Gonorrhea cases: 539.9 per 100K people (5,243 cases)
- Syphilis cases (non-congenital): 70.5 per 100K people (685 cases)
--- Primary and secondary syphilis: 34.8 per 100K people (338 cases)
--- Nonprimary and nonsecondary early syphilis: 35.7 per 100K people (347 cases)

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

#1. Marion County
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