STD Rates in Seneca County, Ohio

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 54,524
Combined
398
per 100K
19th / 88
Chlamydia
339.3
per 100K • 185 cases
Gonorrhea
51.4
per 100K • 28 cases
Syphilis P&S
7.3
per 100K • 4 cases

Seneca County has one of the higher STD burdens in Ohio, with a combined rate of 398.0 per 100,000 residents in 2023 — ranking 19th of 88 counties. Reported infections included chlamydia at 339.3 per 100,000 (185 cases, 27% below the state rate), gonorrhea at 51.4 per 100,000 (28 cases, 69% below the state rate), syphilis at 7.3 per 100,000 (4 cases, 55% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Seneca County.

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Seneca County vs Ohio Average

Infection Seneca County Ohio Rate Difference
Chlamydia 339.3 461.7 27% below
Gonorrhea 51.4 168 69% below
Syphilis (P&S) 7.3 16.3 55% below

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Largest cities in Seneca County, Ohio

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

STD testing in Tiffin, OH17,818 people → STD testing in Fostoria, OH12,344 people →

Largest Counties in Ohio

Franklin County → Cuyahoga County → Hamilton County → Summit County → Montgomery County → Lucas County → Butler County → Stark County → Lorain County → Warren County →

All 88 Ohio counties → STD testing in Ohio →

FAQs

Seneca County ranks 19th of 88 Ohio counties for combined STD rate in 2023, at 398.0 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Seneca County, with 185 cases at a rate of 339.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Seneca County and Ohio. 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