STD Rates in Johnson County, Kansas

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 622,236
Combined
391.4
per 100K
24th / 103
Chlamydia
312.1
per 100K • 1,942 cases
Gonorrhea
71.4
per 100K • 444 cases
Syphilis P&S
7.9
per 100K • 49 cases

Johnson County has one of the higher STD burdens in Kansas, with a combined rate of 391.4 per 100,000 residents in 2023 — ranking 24th of 103 counties. Reported infections included chlamydia at 312.1 per 100,000 (1,942 cases, 31% below the state rate), gonorrhea at 71.4 per 100,000 (444 cases, 50% below the state rate), syphilis at 7.9 per 100,000 (49 cases, 41% below the state rate). Confidential STD testing is available throughout Johnson County — knowing your status is the only way to catch infections that often show no symptoms.

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Johnson County vs Kansas Average

Infection Johnson County Kansas Rate Difference
Chlamydia 312.1 453.8 31% below
Gonorrhea 71.4 144 50% below
Syphilis (P&S) 7.9 13.5 41% below

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Largest cities in Johnson County, Kansas

Largest first, by Census population. Each city page lists nearby clinics, free and low-cost testing, and labs.

STD testing in Overland Park, KS200,306 people → STD testing in Olathe, KS145,057 people → STD testing in Shawnee, KS68,542 people → STD testing in Lenexa, KS58,384 people → STD testing in Leawood, KS33,809 people → STD testing in Gardner, KS24,526 people → STD testing in Prairie Village, KS22,874 people → STD testing in Merriam, KS11,085 people → STD testing in Mission, KS9,915 people → STD testing in Spring Hill, KS9,120 people →

Largest Counties in Kansas

Sedgwick County → Shawnee County → Wyandotte County → Douglas County → Leavenworth County → Riley County → Butler County → Reno County → Saline County → Crawford County →

All 103 Kansas counties → STD testing in Kansas →

FAQs

Johnson County ranks 24th of 103 Kansas counties for combined STD rate in 2023, at 391.4 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Johnson County, with 1,942 cases at a rate of 312.1 per 100,000 residents.
STDTest.com lists confidential testing locations across Johnson County and Kansas. Many offer same-day appointments with results in 1–3 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