STD Rates in Johnson County, Iowa

2023 CDC surveillance data for Johnson County, Iowa — chlamydia, gonorrhea, and syphilis rates with state comparisons.

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Data Year: 2023 Source: CDC STI Surveillance Population: 157,531
Combined
730
per 100K
8th / 99
Chlamydia
578.3
per 100K • 911 cases
Gonorrhea
137.1
per 100K • 216 cases
Syphilis P&S
14.6
per 100K • 23 cases

Johnson County has one of the higher STD burdens in Iowa, with a combined rate of 730.0 per 100,000 residents in 2023 — ranking 8th of 99 counties. Reported infections included chlamydia at 578.3 per 100,000 (911 cases, 35% above the state rate), gonorrhea at 137.1 per 100,000 (216 cases, 17% above the state rate), syphilis at 14.6 per 100,000 (23 cases, 42% above the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Johnson County has confidential testing locations available.

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Johnson County County vs Iowa Average

Infection Johnson County County Iowa Rate Difference
Chlamydia 578.3 426.8 35% above
Gonorrhea 137.1 116.8 17% above
Syphilis (P&S) 14.6 10.3 42% above

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Other Counties in Iowa

Adair County → Adams County → Allamakee County → Appanoose County → Audubon County → Benton County → Black Hawk County → Boone County → Bremer County → Buchanan County → Buena Vista County → Butler County → Calhoun County → Carroll County → Cass County → Cedar County → Cerro Gordo County → Cherokee County → Chickasaw County → Clarke County → Clay County → Clayton County → Clinton County → Crawford County → Dallas County → Davis County → Decatur County → Delaware County → Des Moines County → Dickinson County → Dubuque County → Emmet County → Fayette County → Floyd County → Franklin County → Fremont County → Greene County → Grundy County → Guthrie County → Hamilton County → Hancock County → Hardin County → Harrison County → Henry County → Howard County → Humboldt County → Ida County → Iowa County → Jackson County → Jasper County → Jefferson County → Jones County → Keokuk County → Kossuth County → Lee County → Linn County → Louisa County → Lucas County → Lyon County → Madison County → Mahaska County → Marion County → Marshall County → Mills County → Mitchell County → Monona County → Monroe County → Montgomery County → Muscatine County → O'brien County → Osceola County → Page County → Palo Alto County → Plymouth County → Pocahontas County → Polk County → Pottawattamie County → Poweshiek County → Ringgold County → Sac County → Scott County → Shelby County → Sioux County → Story County → Tama County → Taylor County → Union County → Van Buren County → Wapello County → Warren County → Washington County → Wayne County → Webster County → Winnebago County → Winneshiek County → Woodbury County → Worth County → Wright County →

STD Testing Locations in Johnson County, Iowa

FAQs

Johnson County ranks 8th of 99 Iowa counties for combined STD rate in 2023, at 730.0 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Johnson County, with 911 cases at a rate of 578.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Johnson County and Iowa. Many offer same-day appointments with results in 1u20133 days.

Related Resources

STD Testing Window Periods How Soon After Sex to Test STD Symptoms Guide Testing Timeline Chart All Testing Clinics STD Statistics and Data
Data sourced from the CDC's annual STI Surveillance Report. Rates are per 100,000 population and reflect reported cases only — actual prevalence is likely higher due to undiagnosed infections. While we strive for accuracy, STDTest.com makes no representations or warranties regarding the completeness or accuracy of this data and is not responsible for any errors or omissions. This page is for informational purposes only and does not constitute medical advice.
Sources