STD Rates in Mercer County, West Virginia

2023 CDC surveillance data for Mercer County, West Virginia — chlamydia, gonorrhea, and syphilis rates with state comparisons.

Data Year: 2023 Source: CDC STI Surveillance Population: 58,051
Combined
416.8
per 100K
5th / 55
Chlamydia
342.8
per 100K • 199 cases
US rate: 490.7
5th of 55 in West Virginia
Higher than 61% of US counties
Gonorrhea
72.3
per 100K • 42 cases
US rate: 178.2
7th of 55 in West Virginia
Higher than 54% of US counties
Syphilis P&S
1.7
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 15.8

Mercer County has one of the higher STD burdens in West Virginia, with a combined rate of 416.8 per 100,000 residents in 2023 — ranking 5th of 55 counties. Reported infections included chlamydia at 342.8 per 100,000 (199 cases, 38% above the state rate), gonorrhea at 72.3 per 100,000 (42 cases, 32% above the state rate), syphilis at 1.7 per 100,000 (1 case, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Mercer County has confidential testing locations available.

STD Trends in Mercer County, 2000–2023

Reported cases per 100,000 residents each year, against the West Virginia 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
342.8
per 100K in 2023
0.0 in 2000
Peak 351.7 in 2011
Gonorrhea
72.3
per 100K in 2023
0.0 in 2000
Peak 155.1 in 2013
Syphilis (P&S)
1.7
per 100K in 2023
0.0 in 2000
Peak 1.7 in 2018

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

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Mercer County vs West Virginia and the US

Infection Mercer County West Virginia US vs West Virginia vs US Rank in West Virginia
Chlamydia 342.8199 cases 249 490.7 37.7% above 30.1% below 5th of 55
Gonorrhea 72.342 cases 54.7 178.2 32.2% above 59.4% below 7th of 55
Syphilis (P&S) 1.71 case 10.9 15.8 Too few cases Too few cases

Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among West Virginia’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

Mercer County ranks 5th of 55 West Virginia counties for combined STD rate in 2023, at 416.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Mercer County, with 199 cases at a rate of 342.8 per 100,000 residents.
STDTest.com lists confidential testing locations across Mercer County and West Virginia. 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.