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Table 9. Chlamydia - Reported Cases and Rates in Counties and Independent Cities* Ranked by Number of Reported Cases, United States, 2012


Rank County/Independent City Cases Rate per 100,000 Population Cumulative Percentage
1Los Angeles County, CA 51,589 521.7 3
2Cook County, IL 37,946 727.3 6
3Harris County, TX 21,933 524.6 7
4Philadelphia County, PA 20,8031,353.9 9
5Kings County, NY 19,224 759.0 10
6Maricopa County, AZ 19,044 490.8 11
7Wayne County, MI 17,532 972.9 13
8Bronx County, NY 17,0231,222.9 14
9San Diego County, CA 16,524 526.2 15
10Dallas County, TX 16,223 671.5 16
11Queens County, NY 12,777 568.4 17
12San Bernardino County, CA 11,781 570.4 18
13New York County, NY 11,777 735.2 19
14Bexar County, TX 11,586 659.7 20
15Cuyahoga County, OH 10,221 804.6 20
16Marion County, IN 10,1091,109.3 21
17Milwaukee County, WI 10,0641,056.6 22
18Shelby County, TN 9,9051,059.3 22
19Miami-Dade County, FL 9,612 376.2 23
20Riverside County, CA 9,213 411.4 24
21Orange County, CA 8,642 282.8 24
22Tarrant County, TX 8,620 466.0 25
23Clark County, NV 8,587 435.9 26
24Sacramento County, CA 8,153 567.7 26
25Baltimore (City), MD 7,7141,245.2 27
26Broward County, FL 7,383 414.7 27
27Hillsborough County, FL 7,098 559.9 28
28Franklin County, OH 7,063 599.2 28
29Fulton County, GA 6,868 723.3 29
30Washington, D.C. 6,8081,101.6 29
31Travis County, TX 6,782 637.9 30
32King County, WA 6,772 343.8 30
33Hamilton County, OH 6,576 821.6 31
34Alameda County, CA 6,562 428.9 31
35Allegheny County, PA 6,444 525.2 31
36Orange County, FL 6,361 544.1 32
37Mecklenburg County, NC 6,286 665.6 32
38Suffolk County, MA 6,084 832.4 33
39Prince George's County, MD 6,037 692.9 33
40Fresno County, CA 6,025 639.0 34
41Kern County, CA 5,935 696.8 34
42Hennepin County, MN 5,829 498.9 34
43Jackson County, MO 5,521 816.3 35
44Jefferson County, AL 5,509 836.1 35
45Denver County, CO 5,467 881.8 36
46St. Louis County, MO 5,379 538.6 36
47Duval County, FL 5,331 612.3 36
48Essex County, NJ 5,237 667.0 37
49DeKalb County, GA 5,191 741.7 37
50Honolulu County, HI 5,096 528.8 37
51Erie County, NY 5,088 554.2 38
52Jefferson County, KY 5,072 679.1 38
53El Paso County, TX 5,014 610.9 39
54Monroe County, NY 5,000 670.6 39
55San Francisco County, CA 4,883 600.7 39
56Pima County, AZ 4,761 481.1 40
57Wake County, NC 4,659 501.1 40
58Santa Clara County, CA 4,442 245.5 40
59Pierce County, WA 4,313 533.9 41
60Orleans County, LA 4,2921,189.8 41
61Oklahoma County, OK 4,106 560.6 41
62St. Louis (City), MO 4,0811,283.1 41
63Bernalillo County, NM 4,077 607.6 42
64New Haven County, CT 4,003 464.9 42
65Hartford County, CT 4,001 447.2 42
66Bell County, TX 3,9971,268.1 43
67Guilford County, NC 3,948 797.1 43
68Palm Beach County, FL 3,938 294.9 43
69Salt Lake County, UT 3,923 374.0 43
70Pinellas County, FL 3,813 415.6 44

* Accounting for 44% of reported chlamydia cases.

Counties and independent cities were ranked in descending order by number of cases reported then by rate in 2012.

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