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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.