STD Rates in Caroline County, Maryland

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

Data Year: 2023 Source: CDC STI Surveillance Population: 33,592
Combined
449.6
per 100K
12th / 24
Chlamydia
360.2
per 100K • 121 cases
US rate: 490.7
11th of 24 in Maryland
Higher than 64% of US counties
Gonorrhea
83.4
per 100K • 28 cases
US rate: 178.2
16th of 24 in Maryland
Higher than 59% of US counties
Syphilis P&S
6
per 100K • 2 cases
Based on 2 cases — interpret with care
US rate: 15.8

Caroline County reported a combined STD rate of 449.6 per 100,000 residents in 2023, placing it 12th of 24 Maryland counties — in the upper half of the state. Reported infections included chlamydia at 360.2 per 100,000 (121 cases, 38% below the state rate), gonorrhea at 83.4 per 100,000 (28 cases, 60% below the state rate), syphilis at 6.0 per 100,000 (2 cases, too few for a reliable comparison). Confidential STD testing is available throughout Caroline County — knowing your status is the only way to catch infections that often show no symptoms.

STD Trends in Caroline County, 2000–2023

Reported cases per 100,000 residents each year, against the Maryland rate (dashed). In a county this size a handful of cases moves the rate a long way, so read the shape rather than any single year.

Chlamydia
360.2
per 100K in 2023
0.0 in 2000
Peak 447.8 in 2010
Gonorrhea
83.4
per 100K in 2023
0.0 in 2000
Peak 151.6 in 2007
Syphilis (P&S)
6.0
per 100K in 2023
13.4 in 2000
Peak 13.4 in 2000

Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.

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Caroline County vs Maryland and the US

Infection Caroline County Maryland US vs Maryland vs US Rank in Maryland
Chlamydia 360.2121 cases 579.8 490.7 37.9% below 26.6% below 11th of 24
Gonorrhea 83.428 cases 207.1 178.2 59.7% below 53.2% below 16th of 24
Syphilis (P&S) 62 cases 14.2 15.8 Too few cases Too few cases

Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Maryland’s counties. The US rate is all 50 states combined. Comparisons are left out where fewer than 20 cases were reported, because a rate built on so few cases can swing widely from one year to the next.

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FAQs

Caroline County ranks 12th of 24 Maryland counties for combined STD rate in 2023, at 449.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Caroline County, with 121 cases at a rate of 360.2 per 100,000 residents.
STDTest.com lists confidential testing locations across Caroline County and Maryland. Many offer same-day appointments with results in 1–3 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.