STD Rates in Somerset County, Maryland

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

Data Year: 2023 Source: CDC STI Surveillance Population: 24,912
Combined
790.8
per 100K
5th / 24
Chlamydia
537.9
per 100K • 134 cases
US rate: 490.7
7th of 24 in Maryland
Higher than 81% of US counties
Gonorrhea
240.9
per 100K • 60 cases
US rate: 178.2
5th of 24 in Maryland
Higher than 88% of US counties
Syphilis P&S
12
per 100K • 3 cases
Based on 3 cases — interpret with care
US rate: 15.8

Somerset County has one of the higher STD burdens in Maryland, with a combined rate of 790.8 per 100,000 residents in 2023 — ranking 5th of 24 counties. Reported infections included chlamydia at 537.9 per 100,000 (134 cases, 7% below the state rate), gonorrhea at 240.9 per 100,000 (60 cases, 16% above the state rate), syphilis at 12.0 per 100,000 (3 cases, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Somerset County has confidential testing locations available.

STD Trends in Somerset 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
537.9
per 100K in 2023
0.0 in 2000
Peak 874.6 in 2016
Gonorrhea
240.9
per 100K in 2023
0.0 in 2000
Peak 269.5 in 2018
Syphilis (P&S)
12.0
per 100K in 2023
0.0 in 2000
Peak 15.5 in 2016

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

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Somerset County vs Maryland and the US

Infection Somerset County Maryland US vs Maryland vs US Rank in Maryland
Chlamydia 537.9134 cases 579.8 490.7 7.2% below 9.6% above 7th of 24
Gonorrhea 240.960 cases 207.1 178.2 16.3% above 35.2% above 5th of 24
Syphilis (P&S) 123 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

Somerset County ranks 5th of 24 Maryland counties for combined STD rate in 2023, at 790.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Somerset County, with 134 cases at a rate of 537.9 per 100,000 residents.
STDTest.com lists confidential testing locations across Somerset 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.