STD Rates in Calvert County, Maryland

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 94,742
Combined
255.5
per 100K
21st / 24
Chlamydia
201.6
per 100K • 191 cases
Gonorrhea
50.7
per 100K • 48 cases
Syphilis P&S
3.2
per 100K • 3 cases

Calvert County is among the lower-burden counties in Maryland, reporting a combined STD rate of 255.5 per 100,000 residents in 2023 — 21st of 24 counties. Reported infections included chlamydia at 201.6 per 100,000 (191 cases, 65% below the state rate), gonorrhea at 50.7 per 100,000 (48 cases, 76% below the state rate), syphilis at 3.2 per 100,000 (3 cases, 77% below the state rate). Confidential STD testing is available throughout Calvert County — knowing your status is the only way to catch infections that often show no symptoms.

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Calvert County vs Maryland Average

Infection Calvert County Maryland Rate Difference
Chlamydia 201.6 579.8 65% below
Gonorrhea 50.7 207.1 76% below
Syphilis (P&S) 3.2 14.2 77% below

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Largest cities in Calvert County, Maryland

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

STD testing in Chesapeake Ranch Estates, MD9,241 people → STD testing in Prince Frederick, MD2,955 people →

Largest Counties in Maryland

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

All 24 Maryland counties → STD testing in Maryland →

FAQs

Calvert County ranks 21st of 24 Maryland counties for combined STD rate in 2023, at 255.5 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Calvert County, with 191 cases at a rate of 201.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Calvert County 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