Table 28. Chlamydia — Reported Cases and Rates of Reported Cases by State, Ranked by Rates, United States

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The table below is from Sexually Transmitted Infections Surveillance, 2023.

2023

Rank* State Cases Rate per 100,000 Population
1 Louisiana 36,242 792.4
2 Mississippi 20,603 700.9
3 Alaska 5,117 697.7
4 Alabama 33,261 651.1
5 Georgia 71,294 646.4
6 South Carolina 32,889 612.1
7 North Carolina 65,867 607.9
8 Maryland 35,836 579.8
9 Arkansas 17,781 579.6
10 New York 109,284 558.4
11 Illinois 69,992 557.7
12 Delaware 5,703 552.7
13 Arizona 41,058 552.5
14 South Dakota 4,887 531.6
15 New Mexico 11,071 523.6
16 Tennessee 36,872 517.4
17 Florida 112,804 498.9
18 Missouri 30,892 498.6
19 Nevada 15,766 493.6
US TOTAL† 1,648,568 492.2
20 Texas 150,056 491.9
21 California 191,357 491.1
22 Indiana 33,693 491.0
23 Rhode Island 5,269 480.8
24 Virginia 41,206 472.8
25 Oklahoma 19,104 471.3
26 Nebraska 9,274 468.8
27 Ohio 54,411 461.7
28 Kansas 13,345 453.8
29 North Dakota 3,421 436.4
30 Hawaii 6,251 435.6
31 Colorado 25,571 435.1
32 Michigan 43,115 429.5
33 Iowa 13,687 426.8
34 Wisconsin 24,993 422.8
35 Pennsylvania 54,600 421.2
36 Massachusetts 28,895 412.7
37 New Jersey 35,689 384.1
38 Kentucky 17,284 381.9
39 Minnesota 21,777 379.5
40 Connecticut 13,197 364.8
41 Oregon 15,344 362.5
42 Washington 27,687 354.4
43 Montana 3,655 322.6
44 Utah 11,004 322.0
45 Wyoming 1,829 313.2
46 Idaho 5,793 294.9
47 West Virginia 4,407 249.0
48 Maine 3,034 217.4
49 Vermont 1,307 201.9
50 New Hampshire 2,756 196.6
* States were ranked by unrounded rate, then by case count, then in alphabetical order, with rates shown rounded to the nearest tenth.

† Total includes cases reported by the District of Columbia with 8,338 cases and a rate of 1,228.0, but excludes US territories.

NOTE: See Technical Notes for more information on chlamydia case reporting. This report includes data from years that coincide with the COVID-19 pandemic, which introduced uncertainty and difficulty in interpreting case data. See Impact of COVID-19 on STIs for more information. Tennessee transitioned STI surveillance information systems in September of 2023 which may have impacted the overall case counts. Caution should be applied in interpretation of these data.
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National Center for HIV, Viral Hepatitis, STD, and Tuberculosis Prevention; About Division of STD Prevention