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Table 6. Chlamydia — Counties and independent cities* ranked by number of reported cases: United States, 2006

Rank County/Independent City Cases Rate per 100,000 Population Cumulative Percent
1 Los Angeles County, CA 42,943 432.2 4
2 Cook County, IL 31,757 598.8 7
3 Philadelphia County, PA 17,199 1,175.4 8
4 Maricopa County, AZ 14,579 401.0 10
5 Kings County, NY 13,915 559.7 11
6 Wayne County, MI 12,213 611.2 12
7 San Diego County, CA 11,980 408.4 14
8 Harris County, TX 11,872 321.5 15
9 Bronx County, NY 10,494 773.0 16
10 Milwaukee County, WI 9,999 1,084.9 17
11 Shelby County, TN 8,795 967.5 18
12 Dallas County, TX 8,521 369.6 18
13 San Bernardino County, CA 8,066 410.8 19
14 Queens County, NY 8,015 357.6 20
15 New York County, NY 7,997 501.9 21
16 Orange County, CA 7,970 266.7 21
17 Sacramento County, CA 7,688 563.9 22
18 Bexar County, TX 7,634 502.8 23
19 Fulton County, GA 6,882 751.6 24
20 Marion County, IN 6,807 788.6 24
21 Clark County, NV 6,592 385.4 25
22 Cuyahoga County, OH 6,573 492.2 26
23 Baltimore (City), MD 6,307 992.0 26
24 Hamilton County, OH 6,114 757.9 27
25 Alameda County, CA 5,922 408.7 27
26 Santa Clara County, CA 5,767 339.4 28
27 Tarrant County, TX 5,482 338.3 28
28 Prince George’s County, MD 5,422 640.8 29
29 Travis County, TX 5,418 610.0 29
30 Fresno County, CA 5,341 608.6 30
31 King County, WA 5,244 292.4 30
32 Franklin County, OH 5,135 470.8 31
33 Miami-Dade County, FL 5,069 213.3 31
34 St Louis County, MO 4,876 485.3 32
35 Broward County, FL 4,870 274.0 32
36 Duval County, FL 4,816 582.7 33
37 Jackson County, MO 4,786 721.9 33
38 Essex County, NJ 4,682 591.9 34
39 De Kalb County, GA 4,676 689.7 34
40 Orange County, FL 4,593 449.0 35
41 St Louis (City), MO 4,581 1,330.3 35
42 Hennepin County, MN 4,576 408.8 36
43 Honolulu County, HI 4,462 492.9 36
44 Jefferson County, AL 4,447 676.6 36
45 Riverside County, CA 4,406 226.4 37
46 Kern County, CA 4,225 558.3 37
47 Erie County, NY 4,199 451.2 38
48 Bernalillo County, NM 4,195 695.0 38
49 Allegheny County, PA 4,193 339.3 39
50 San Francisco County, CA 4,091 553.3 39
51 Suffolk County, MA 4,085 624.2 39
52 Wake County, NC 3,942 526.4 40
53 Hillsborough County, FL 3,835 338.7 40
54 Pima County, AZ 3,744 404.9 40

*Accounting for 40% of reported chlamydia cases.

Counties and independent cities were ranked in descending order by number of cases reported in 2006.

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