STD Rates in Baltimore City, Maryland

2023 CDC surveillance data for Baltimore City, Maryland — chlamydia, gonorrhea, and syphilis rates with state comparisons.

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Data Year: 2023 Source: CDC STI Surveillance Population: 565,250
Combined
1939.7
per 100K
1st / 24
Chlamydia
1218.4
per 100K • 6,887 cases
Gonorrhea
671.4
per 100K • 3,795 cases
Syphilis P&S
49.9
per 100K • 282 cases

Baltimore City has one of the higher STD burdens in Maryland, with a combined rate of 1,939.7 per 100,000 residents in 2023 — ranking 1st of 24 counties. Reported infections included chlamydia at 1218.4 per 100,000 (6,887 cases, 110% above the state rate), gonorrhea at 671.4 per 100,000 (3,795 cases, 224% above the state rate), syphilis at 49.9 per 100,000 (282 cases, 251% 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 Baltimore City.

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Baltimore City vs Maryland Average

Infection Baltimore City Maryland Rate Difference
Chlamydia 1218.4 579.8 110% above
Gonorrhea 671.4 207.1 224% above
Syphilis (P&S) 49.9 14.2 251% above

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Largest Counties in Maryland

Montgomery County → Prince George's County → Baltimore County → Anne Arundel County → Howard County → Frederick County → Harford County → Carroll County → Charles County → Washington County →

All 24 Maryland counties → STD testing in Maryland →

FAQs

Baltimore City ranks 1st of 24 Maryland counties for combined STD rate in 2023, at 1,939.7 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Baltimore City, with 6,887 cases at a rate of 1218.4 per 100,000 residents.
STDTest.com lists confidential testing locations across Baltimore City and Maryland. 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