Table 9. Chlamydia - Counties and Independent Cities* Ranked by Number of Reported Cases, United States, 2010
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This web page is archived for historical purposes and is no longer being updated. Newer data is available on the STD Data and Statistics page.
| Rank† | County/Independent City | Cases | Rates per 100,000 Population | Cumulative Percentage |
|---|---|---|---|---|
| 1 | Los Angeles County, CA | 47,544 | 482.8 | 3 |
| 2 | Cook County, IL | 34,664 | 655.6 | 6 |
| 3 | Harris County, TX | 22,322 | 548.3 | 7 |
| 4 | Wayne County, MI | 21,155 | 1,098.5 | 9 |
| 5 | Kings County, NY | 20,790 | 809.9 | 11 |
| 6 | Philadelphia County, PA | 19,428 | 1,255.6 | 12 |
| 7 | Bronx County, NY | 18,465 | 1,321.5 | 14 |
| 8 | Maricopa County, AZ | 15,567 | 386.9 | 15 |
| 9 | Dallas County, TX | 15,557 | 634.5 | 16 |
| 10 | San Diego County, CA | 15,341 | 502.4 | 17 |
| 11 | Queens County, NY | 11,667 | 505.8 | 18 |
| 12 | Bexar County, TX | 11,441 | 692.8 | 19 |
| 13 | New York County, NY | 11,328 | 695.4 | 20 |
| 14 | Milwaukee County, WI | 10,707 | 1,115.9 | 21 |
| 15 | Denver County, CO | 10,496 | 1,719.7 | 21 |
| 16 | Shelby County, TN | 9,978 | 1,084.3 | 22 |
| 17 | Cuyahoga County, OH | 9,865 | 773.3 | 23 |
| 18 | Miami-Dade County, FL | 8,655 | 346.1 | 24 |
| 19 | San Bernardino County, CA | 8,515 | 422.0 | 24 |
| 20 | Orange County, CA | 8,489 | 280.5 | 25 |
| 21 | Baltimore (City), MD | 8,247 | 1,293.8 | 26 |
| 22 | Franklin County, OH | 8,184 | 711.6 | 26 |
| 23 | Tarrant County, TX | 8,034 | 448.9 | 27 |
| 24 | Clark County, NV | 7,614 | 400.1 | 27 |
| 25 | Marion County, IN | 7,298 | 819.2 | 28 |
| 26 | Hillsborough County, FL | 7,020 | 587.3 | 28 |
| 27 | Broward County, FL | 6,956 | 393.8 | 29 |
| 28 | Alameda County, CA | 6,610 | 443.2 | 29 |
| 29 | Sacramento County, CA | 6,585 | 470.0 | 30 |
| 30 | Hamilton County, OH | 6,377 | 745.8 | 30 |
| 31 | Fulton County, GA | 6,160 | 595.9 | 31 |
| 32 | Orange County, FL | 6,095 | 561.0 | 31 |
| 33 | King County, WA | 6,053 | 315.8 | 32 |
| 34 | Fresno County, CA | 6,025 | 658.3 | 32 |
| 35 | Suffolk County, MA | 6,017 | 798.5 | 33 |
| 36 | Prince George's County, MD | 5,884 | 705.0 | 33 |
| 37 | Travis County, TX | 5,832 | 568.3 | 34 |
| 38 | Duval County, FL | 5,745 | 670.3 | 34 |
| 39 | Monroe County, NY | 5,744 | 782.9 | 35 |
| 40 | Washington, D.C. | 5,589 | 932.0 | 35 |
| 41 | Santa Clara County, CA | 5,518 | 309.2 | 35 |
| 42 | Jackson County, MO | 5,507 | 780.4 | 36 |
| 43 | Kern County, CA | 5,457 | 675.9 | 36 |
| 44 | Essex County, NJ | 5,340 | 693.8 | 37 |
| 45 | Jefferson County, AL | 5,268 | 792.1 | 37 |
| 46 | Hennepin County, MN | 5,242 | 453.4 | 37 |
| 47 | St. Louis County, MO | 5,233 | 527.3 | 38 |
| 48 | Erie County, NY | 5,080 | 558.7 | 38 |
| 49 | Allegheny County, PA | 5,042 | 413.8 | 39 |
| 50 | Honolulu County, HI | 4,827 | 531.9 | 39 |
| 51 | Jefferson County, KY | 4,732 | 655.8 | 39 |
| 52 | Mecklenburg County, NC | 4,628 | 506.5 | 40 |
| 53 | Orleans County, LA | 4,626 | 1,303.6 | 40 |
| 54 | San Francisco County, CA | 4,596 | 563.7 | 40 |
* Accounting for 40% of reported chlamydia cases.
† Counties and independent cities were ranked in descending order by number of cases reported in 2010.
- Page last reviewed: November 17, 2011 (archived document)
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