STD Rates in Charleston County, South Carolina

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 424,389
Combined
789
per 100K
26th / 46
Chlamydia
577.3
per 100K • 2,450 cases
Gonorrhea
192.8
per 100K • 818 cases
Syphilis P&S
18.9
per 100K • 80 cases

Charleston County recorded a combined STD rate of 789.0 per 100,000 residents in 2023, ranking 26th of 46 counties in South Carolina. Reported infections included chlamydia at 577.3 per 100,000 (2,450 cases, 6% below the state rate), gonorrhea at 192.8 per 100,000 (818 cases, 13% below the state rate), syphilis at 18.9 per 100,000 (80 cases, 9% above the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Charleston County has confidential testing locations available.

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Charleston County vs South Carolina Average

Infection Charleston County South Carolina Rate Difference
Chlamydia 577.3 612.1 6% below
Gonorrhea 192.8 222.4 13% below
Syphilis (P&S) 18.9 17.3 9% above

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Largest cities in Charleston County, South Carolina

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

STD testing in Charleston, SC154,338 people → STD testing in North Charleston, SC119,913 people → STD testing in Mount Pleasant, SC93,993 people → STD testing in James Island, SC12,198 people → STD testing in Hollywood, SC5,382 people → STD testing in McClellanville, SC690 people → STD testing in Johns Island, SC →

Largest Counties in South Carolina

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

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

FAQs

Charleston County ranks 26th of 46 South Carolina counties for combined STD rate in 2023, at 789.0 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Charleston County, with 2,450 cases at a rate of 577.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Charleston 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