STD Rates in Union County, South Carolina

2023 CDC surveillance data for Union County, South Carolina — chlamydia, gonorrhea, and syphilis rates with state comparisons.

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Data Year: 2023 Source: CDC STI Surveillance Population: 26,628
Combined
927.6
per 100K
19th / 46
Chlamydia
657.2
per 100K • 175 cases
Gonorrhea
244.1
per 100K • 65 cases
Syphilis P&S
26.3
per 100K • 7 cases

Union County reported a combined STD rate of 927.6 per 100,000 residents in 2023, placing it 19th of 46 South Carolina counties — in the upper half of the state. Reported infections included chlamydia at 657.2 per 100,000 (175 cases, 7% above the state rate), gonorrhea at 244.1 per 100,000 (65 cases, 10% above the state rate), syphilis at 26.3 per 100,000 (7 cases, 52% above the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Union County.

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Union County vs South Carolina Average

Infection Union County South Carolina Rate Difference
Chlamydia 657.2 612.1 7% above
Gonorrhea 244.1 222.4 10% above
Syphilis (P&S) 26.3 17.3 52% above

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STD testing in Union County, South Carolina

Clinics, free and low-cost testing, and labs near Union.

STD testing in Union, SC8,079 people →

Largest Counties in South Carolina

Greenville County → Richland County → Charleston County → Horry County → Spartanburg County → Lexington County → York County → Berkeley County → Anderson County → Beaufort County →

All 46 South Carolina counties → STD testing in South Carolina →

FAQs

Union County ranks 19th of 46 South Carolina counties for combined STD rate in 2023, at 927.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Union County, with 175 cases at a rate of 657.2 per 100,000 residents.
STDTest.com lists confidential testing locations across Union County and South Carolina. Many offer same-day appointments with results in 1–3 days.

Related Resources

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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