STD Rates in Chester County, Pennsylvania

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

Data Year: 2023 Source: CDC STI Surveillance Population: 549,669
Combined
280.2
per 100K
31st / 67
Chlamydia
226.5
per 100K • 1,245 cases
Gonorrhea
49.3
per 100K • 271 cases
Syphilis P&S
4.4
per 100K • 24 cases

Chester County reported a combined STD rate of 280.2 per 100,000 residents in 2023, placing it 31st of 67 Pennsylvania counties — in the upper half of the state. Reported infections included chlamydia at 226.5 per 100,000 (1,245 cases, 46% below the state rate), gonorrhea at 49.3 per 100,000 (271 cases, 66% below the state rate), syphilis at 4.4 per 100,000 (24 cases, 52% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Chester County.

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Chester County County vs Pennsylvania Average

Infection Chester County County Pennsylvania Rate Difference
Chlamydia 226.5 421.2 46% below
Gonorrhea 49.3 144.7 66% below
Syphilis (P&S) 4.4 9.1 52% below

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FAQs

Chester County ranks 31st of 67 Pennsylvania counties for combined STD rate in 2023, at 280.2 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Chester County, with 1,245 cases at a rate of 226.5 per 100,000 residents.
STDTest.com lists confidential testing locations across Chester County and Pennsylvania. Many offer same-day appointments with results in 1u20133 days.
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.