Table 2. Chlamydia — Reported Cases and Rates of Reported Cases by State, Ranked by Rates, United States, 2021

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Table 2. Chlamydia — Reported Cases and Rates of Reported Cases by State, Ranked by Rates, United States, 2021
Rank* State Cases Rate per 100,000 Population
1 Alaska 5,571 760.4
2 Mississippi 22,126 750.0
3 Louisiana 33,759 730.1
4 South Carolina 36,477 702.7
5 Georgia 67,941 629.1
6 Alabama 31,507 625.2
7 North Carolina 63,660 603.3
8 Arkansas 17,936 592.8
9 New Mexico 12,441 588.0
10 Arizona 41,498 570.3
11 Illinois 71,836 566.9
12 Tennessee 39,227 562.4
13 South Dakota 4,853 542.0
14 Nevada 16,348 520.0
15 Oklahoma 20,709 519.5
16 Missouri 31,915 517.4
17 New York 101,657 512.5
18 North Dakota 3,964 511.5
19 Indiana 34,755 510.7
20 Texas 149,636 506.8
21 Kansas 14,851 506.1
US TOTAL† 1,644,416 495.5
22 Iowa 15,620 489.2
23 California 191,542 488.2
24 Delaware 4,880 486.4
25 Ohio 56,520 479.8
26 Florida 104,400 479.3
27 Rhode Island 5,199 474.5
28 Wisconsin 27,847 472.3
29 Virginia 40,409 467.6
30 Colorado 26,747 460.2
31 Nebraska 8,897 453.1
32 Michigan 45,473 452.4
33 Hawaii 6,078 421.6
34 Kentucky 18,500 410.3
35 Pennsylvania 53,124 409.8
36 Connecticut 14,750 409.1
37 Minnesota 22,573 395.5
38 Massachusetts 26,950 385.8
39 Washington 29,632 382.9
40 Oregon 15,596 367.3
41 Montana 4,029 364.9
42 New Jersey 33,425 360.7
43 Wyoming 2,078 359.0
44 Utah 11,221 336.2
45 Idaho 6,320 332.5
46 West Virginia 5,226 293.1
47 Maine 3,372 245.7
48 New Hampshire 3,027 217.9
49 Vermont 910 141.0
Maryland NR —
 

* States were ranked by 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 6,952 cases and a rate of 1,037.5, but excludes territories.

NR = No report.

NOTE: The COVID-19 pandemic has introduced uncertainty and difficulty in interpreting STD data collected during 2020 and 2021. See Impact of COVID-19 on STDs for more information. Due to a network security incident in December 2021, the Maryland Department of Health could not finalize their 2021 STD case notification data. Although 2021 data from Maryland are included in the national case count and rate displayed in this table, state-specific data have been suppressed.

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