Table 9. Chlamydia - Reported Cases and Rates in Counties and Independent Cities* Ranked by Number of Reported Cases, United States, 2012
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| Rank† | County/Independent City | Cases | Rate per 100,000 Population | Cumulative Percentage |
|---|---|---|---|---|
| 1 | Los Angeles County, CA | 51,589 | 521.7 | 3 |
| 2 | Cook County, IL | 37,946 | 727.3 | 6 |
| 3 | Harris County, TX | 21,933 | 524.6 | 7 |
| 4 | Philadelphia County, PA | 20,803 | 1,353.9 | 9 |
| 5 | Kings County, NY | 19,224 | 759.0 | 10 |
| 6 | Maricopa County, AZ | 19,044 | 490.8 | 11 |
| 7 | Wayne County, MI | 17,532 | 972.9 | 13 |
| 8 | Bronx County, NY | 17,023 | 1,222.9 | 14 |
| 9 | San Diego County, CA | 16,524 | 526.2 | 15 |
| 10 | Dallas County, TX | 16,223 | 671.5 | 16 |
| 11 | Queens County, NY | 12,777 | 568.4 | 17 |
| 12 | San Bernardino County, CA | 11,781 | 570.4 | 18 |
| 13 | New York County, NY | 11,777 | 735.2 | 19 |
| 14 | Bexar County, TX | 11,586 | 659.7 | 20 |
| 15 | Cuyahoga County, OH | 10,221 | 804.6 | 20 |
| 16 | Marion County, IN | 10,109 | 1,109.3 | 21 |
| 17 | Milwaukee County, WI | 10,064 | 1,056.6 | 22 |
| 18 | Shelby County, TN | 9,905 | 1,059.3 | 22 |
| 19 | Miami-Dade County, FL | 9,612 | 376.2 | 23 |
| 20 | Riverside County, CA | 9,213 | 411.4 | 24 |
| 21 | Orange County, CA | 8,642 | 282.8 | 24 |
| 22 | Tarrant County, TX | 8,620 | 466.0 | 25 |
| 23 | Clark County, NV | 8,587 | 435.9 | 26 |
| 24 | Sacramento County, CA | 8,153 | 567.7 | 26 |
| 25 | Baltimore (City), MD | 7,714 | 1,245.2 | 27 |
| 26 | Broward County, FL | 7,383 | 414.7 | 27 |
| 27 | Hillsborough County, FL | 7,098 | 559.9 | 28 |
| 28 | Franklin County, OH | 7,063 | 599.2 | 28 |
| 29 | Fulton County, GA | 6,868 | 723.3 | 29 |
| 30 | Washington, D.C. | 6,808 | 1,101.6 | 29 |
| 31 | Travis County, TX | 6,782 | 637.9 | 30 |
| 32 | King County, WA | 6,772 | 343.8 | 30 |
| 33 | Hamilton County, OH | 6,576 | 821.6 | 31 |
| 34 | Alameda County, CA | 6,562 | 428.9 | 31 |
| 35 | Allegheny County, PA | 6,444 | 525.2 | 31 |
| 36 | Orange County, FL | 6,361 | 544.1 | 32 |
| 37 | Mecklenburg County, NC | 6,286 | 665.6 | 32 |
| 38 | Suffolk County, MA | 6,084 | 832.4 | 33 |
| 39 | Prince George's County, MD | 6,037 | 692.9 | 33 |
| 40 | Fresno County, CA | 6,025 | 639.0 | 34 |
| 41 | Kern County, CA | 5,935 | 696.8 | 34 |
| 42 | Hennepin County, MN | 5,829 | 498.9 | 34 |
| 43 | Jackson County, MO | 5,521 | 816.3 | 35 |
| 44 | Jefferson County, AL | 5,509 | 836.1 | 35 |
| 45 | Denver County, CO | 5,467 | 881.8 | 36 |
| 46 | St. Louis County, MO | 5,379 | 538.6 | 36 |
| 47 | Duval County, FL | 5,331 | 612.3 | 36 |
| 48 | Essex County, NJ | 5,237 | 667.0 | 37 |
| 49 | DeKalb County, GA | 5,191 | 741.7 | 37 |
| 50 | Honolulu County, HI | 5,096 | 528.8 | 37 |
| 51 | Erie County, NY | 5,088 | 554.2 | 38 |
| 52 | Jefferson County, KY | 5,072 | 679.1 | 38 |
| 53 | El Paso County, TX | 5,014 | 610.9 | 39 |
| 54 | Monroe County, NY | 5,000 | 670.6 | 39 |
| 55 | San Francisco County, CA | 4,883 | 600.7 | 39 |
| 56 | Pima County, AZ | 4,761 | 481.1 | 40 |
| 57 | Wake County, NC | 4,659 | 501.1 | 40 |
| 58 | Santa Clara County, CA | 4,442 | 245.5 | 40 |
| 59 | Pierce County, WA | 4,313 | 533.9 | 41 |
| 60 | Orleans County, LA | 4,292 | 1,189.8 | 41 |
| 61 | Oklahoma County, OK | 4,106 | 560.6 | 41 |
| 62 | St. Louis (City), MO | 4,081 | 1,283.1 | 41 |
| 63 | Bernalillo County, NM | 4,077 | 607.6 | 42 |
| 64 | New Haven County, CT | 4,003 | 464.9 | 42 |
| 65 | Hartford County, CT | 4,001 | 447.2 | 42 |
| 66 | Bell County, TX | 3,997 | 1,268.1 | 43 |
| 67 | Guilford County, NC | 3,948 | 797.1 | 43 |
| 68 | Palm Beach County, FL | 3,938 | 294.9 | 43 |
| 69 | Salt Lake County, UT | 3,923 | 374.0 | 43 |
| 70 | Pinellas 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.
- Page last reviewed: January 7, 2014 (archived document)
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