Table 9. Chlamydia — Reported Cases and Rates of Reported Cases in Counties and Independent Cities* Ranked by Number of Reported Cases, United States, 2019

Table 9. Chlamydia — Reported Cases and Rates of Reported Cases in Counties and Independent Cities* Ranked by Number of Reported Cases, United States, 2019
Rank* County/Independent City Cases Rate per 100,000 Population Cumulative Percentage
1 Los Angeles County, CA 69,712 689.8 4
2 Cook County, IL 45,414 876.6 6
3 Maricopa County, AZ 28,375 643.3 8
4 Harris County, TX 23,693 504.3 9
5 Kings County, NY 23,105 894.6 11
6 San Diego County, CA 22,920 685.5 12
7 Philadelphia County, PA 20,354 1,284.9 13
8 Dallas County, TX 19,946 756.2 14
9 Bronx County, NY 18,281 1,276.5 15
10 New York County, NY 17,818 1,094.0 16
11 Wayne County, MI 15,380 876.9 17
12 Queens County, NY 14,810 649.9 18
13 Miami-Dade County, FL 14,680 531.6 18
14 Orange County, CA 14,265 447.7 19
15 Clark County, NV 14,044 629.3 20
16 San Bernardino County, CA 13,776 634.4 21
17 Riverside County, CA 12,258 500.2 21
18 Broward County, FL 12,167 623.5 22
19 Cuyahoga County, OH 11,751 944.7 23
20 Milwaukee County, WI 11,703 1,234.2 23
21 King County, WA 11,639 521.2 24
22 Sacramento County, CA 11,076 718.8 25
23 Orange County, FL 10,365 750.7 25
24 Marion County, IN 10,318 1,080.8 26
25 Franklin County, OH 10,302 786.2 26
26 Shelby County, TN 10,095 1,078.8 27
27 Mecklenburg County, NC 9,737 890.1 28
28 Alameda County, CA 9,645 578.7 28
29 San Francisco County, CA 9,505 1,076.1 29
30 Washington, D.C. 9,327 1,327.8 29
31 Hillsborough County, FL 9,078 631.8 30
32 Tarrant County, TX 8,885 426.2 30
33 Baltimore (City), MD 8,602 1,427.7 31
34 Bexar County, TX 8,531 429.5 31
35 Hennepin County, MN 8,381 665.5 32
36 Prince George’s County, MD 8,262 908.6 32
37 Santa Clara County, CA 8,143 420.3 32
38 Fulton County, GA 8,057 767.3 33
39 Denver County, CO 7,935 1,107.5 33
40 Duval County, FL 7,895 830.9 34
41 Travis County, TX 7,681 615.1 34
42 Suffolk County, MA 7,286 902.6 35
43 Fresno County, CA 7,225 726.6 35
44 Hamilton County, OH 7,126 872.6 35
45 Kern County, CA 6,876 766.8 36
46 Pima County, AZ 6,677 642.6 36
47 Essex County, NJ 6,631 829.1 36
48 St. Louis County, MO 6,599 661.9 37
49 Jackson County, MO 6,480 925.3 37
50 Honolulu County, HI 6,399 652.9 38
51 Wake County, NC 6,369 583.1 38
52 Pierce County, WA 6,344 711.8 38
53 Palm Beach County, FL 6,304 424.2 39
54 Allegheny County, PA 6,301 517.1 39
55 Oklahoma County, OK 6,121 772.3 39
56 Contra Costa County, CA 6,018 523.2 40
57 Jefferson County, AL 5,918 897.6 40
58 Davidson County, TN 5,843 843.6 40
59 Middlesex County, MA 5,790 358.6 41
60 Monroe County, NY 5,787 779.4 41
61 Dekalb County, GA 5,638 745.2 41
62 Jefferson County, KY 5,608 727.8 42
63 Erie County, NY 5,496 597.6 42
64 Multnomah County, OR 5,494 676.7 42
65 Bernalillo County, NM 5,372 791.5 42
66 Suffolk County, NY 5,370 362.6 43
67 Guilford County, NC 5,274 988.3 43
68 Salt Lake County, UT 5,210 452.0 43
69 Nassau County, NY 4,960 365.2 44
70 Richland County, SC 4,930 1,189.2 44
 

* The top 70 counties and independent cities ranked in descending order by number of cases reported in 2019 then by rate are displayed.

NOTE: Relative rankings of counties may be impacted by completeness of the variable used to identify county. In 2019, the variable used to identify county was complete for ≤95% of cases in Georgia, South Dakota, Utah, and West Virginia. See Technical Notes for more information.

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