Table 9. Chlamydia - Reported Cases and Rates of Reported Cases in Counties and Independent Cities* Ranked by Number of Reported Cases, United States, 2013
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| Rank† | County/Independent City | Cases | Rate per 100,000 Population | Cumulative Percentage |
|---|---|---|---|---|
| 1 | Los Angeles County, CA | 50,775 | 509.6 | 3 |
| 2 | Cook County, IL | 34,589 | 661.2 | 6 |
| 3 | Harris County, TX | 23,698 | 557.1 | 7 |
| 4 | Philadelphia County, PA | 19,570 | 1,264.5 | 9 |
| 5 | Maricopa County, AZ | 18,940 | 480.4 | 10 |
| 6 | Kings County, NY | 17,808 | 694.1 | 11 |
| 7 | Bronx County, NY | 16,116 | 1,144.2 | 12 |
| 8 | Wayne County, MI | 15,723 | 877.2 | 14 |
| 9 | San Diego County, CA | 14,706 | 462.9 | 15 |
| 10 | Dallas County, TX | 14,691 | 598.7 | 16 |
| 11 | Bexar County, TX | 11,826 | 662.3 | 17 |
| 12 | New York County, NY | 11,426 | 705.7 | 17 |
| 13 | Queens County, NY | 11,092 | 488.0 | 18 |
| 14 | San Bernardino County, CA | 10,966 | 526.9 | 19 |
| 15 | Miami-Dade County, FL | 10,287 | 397.0 | 20 |
| 16 | Cuyahoga County, OH | 10,025 | 792.4 | 20 |
| 17 | Milwaukee County, WI | 9,734 | 1,019.0 | 21 |
| 18 | Clark County, NV | 9,286 | 464.1 | 22 |
| 19 | Marion County, IN | 9,282 | 1,010.0 | 22 |
| 20 | Riverside County, CA | 8,853 | 390.2 | 23 |
| 21 | Tarrant County, TX | 8,774 | 466.7 | 24 |
| 22 | Orange County, CA | 8,611 | 278.7 | 24 |
| 23 | Shelby County, TN | 8,471 | 900.4 | 25 |
| 24 | Broward County, FL | 8,048 | 443.4 | 25 |
| 25 | Sacramento County, CA | 7,965 | 549.3 | 26 |
| 26 | Franklin County, OH | 7,825 | 654.5 | 27 |
| 27 | Baltimore (City), MD | 7,765 | 1,249.7 | 27 |
| 28 | Hillsborough County, FL | 7,167 | 560.9 | 28 |
| 29 | Travis County, TX | 6,839 | 624.2 | 28 |
| 30 | Orange County, FL | 6,803 | 565.9 | 29 |
| 31 | King County, WA | 6,792 | 338.3 | 29 |
| 32 | Hamilton County, OH | 6,584 | 820.9 | 30 |
| 33 | Santa Clara County, CA | 6,517 | 354.7 | 30 |
| 34 | Kern County, CA | 6,508 | 760.1 | 30 |
| 35 | Alameda County, CA | 6,479 | 416.7 | 31 |
| 36 | Washington, D.C. | 6,414 | 1,014.4 | 31 |
| 37 | Fresno County, CA | 6,390 | 674.1 | 32 |
| 38 | Prince George's County, MD | 6,163 | 699.4 | 32 |
| 39 | Allegheny County, PA | 6,095 | 495.8 | 33 |
| 40 | Mecklenburg County, NC | 6,087 | 628.2 | 33 |
| 41 | Suffolk County, MA | 5,785 | 777.1 | 34 |
| 42 | Hennepin County, MN | 5,766 | 486.8 | 34 |
| 43 | Duval County, FL | 5,720 | 650.3 | 34 |
| 44 | El Paso County, TX | 5,583 | 674.8 | 35 |
| 45 | Denver County, CO | 5,380 | 848.2 | 35 |
| 46 | Jefferson County, AL | 5,290 | 801.5 | 36 |
| 47 | Essex County, NJ | 5,221 | 662.8 | 36 |
| 48 | St. Louis County, MO | 5,211 | 520.9 | 36 |
| 49 | Pima County, AZ | 5,192 | 523.2 | 37 |
| 50 | Honolulu County, HI | 5,185 | 531.0 | 37 |
| 51 | San Francisco County, CA | 5,112 | 619.0 | 37 |
| 52 | Jackson County, MO | 5,078 | 749.7 | 38 |
| 53 | Jefferson County, KY | 4,944 | 658.5 | 38 |
| 54 | Erie County, NY | 4,892 | 532.3 | 38 |
| 55 | Bernalillo County, NM | 4,604 | 683.6 | 39 |
| 56 | Monroe County, NY | 4,582 | 612.7 | 39 |
| 57 | Palm Beach County, FL | 4,486 | 330.7 | 39 |
| 58 | Contra Costa County, CA | 4,443 | 411.5 | 40 |
| 59 | Fulton County, GA | 4,416 | 451.6 | 40 |
| 60 | Oklahoma County, OK | 4,300 | 579.7 | 40 |
| 61 | Pierce County, WA | 4,294 | 529.0 | 41 |
| 62 | Wake County, NC | 4,210 | 442.2 | 41 |
| 63 | St. Louis (City), MO | 4,128 | 1,297.4 | 41 |
| 64 | Pinellas County, FL | 4,080 | 442.8 | 42 |
| 65 | Orleans Parish, LA | 4,064 | 1,100.6 | 42 |
| 66 | Davidson County, TN | 3,965 | 611.6 | 42 |
| 67 | Multnomah County, OR | 3,933 | 518.0 | 42 |
| 68 | Salt Lake County, UT | 3,806 | 357.8 | 43 |
| 69 | New Haven County, CT | 3,799 | 440.3 | 43 |
| 70 | Hartford County, CT | 3,759 | 418.9 | 43 |
* Accounting for 43% of reported chlamydia cases.
† Counties and independent cities were ranked in descending order by number of cases reported then by rate in 2013.
- Page last reviewed: December 16, 2014 (archived document)
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