STD Rates in Knox County, Ohio

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

Data Year: 2023 Source: CDC STI Surveillance Population: 63,340
Combined
192.6
per 100K
76th / 88
Chlamydia
156.3
per 100K • 99 cases
US rate: 490.7
78th of 88 in Ohio
Higher than 17% of US counties
Gonorrhea
26.8
per 100K • 17 cases
Based on 17 cases — interpret with care
US rate: 178.2
Syphilis P&S
9.5
per 100K • 6 cases
Based on 6 cases — interpret with care
US rate: 15.8

Knox County is among the lower-burden counties in Ohio, reporting a combined STD rate of 192.6 per 100,000 residents in 2023 — 76th of 88 counties. Reported infections included chlamydia at 156.3 per 100,000 (99 cases, 66% below the state rate), gonorrhea at 26.8 per 100,000 (17 cases, too few for a reliable comparison), syphilis at 9.5 per 100,000 (6 cases, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Knox County.

STD Trends in Knox County, 2000–2023

Reported cases per 100,000 residents each year, against the Ohio 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
156.3
per 100K in 2023
86.1 in 2000
Peak 257.9 in 2017
Gonorrhea
26.8
per 100K in 2023
7.3 in 2000
Peak 63.8 in 2020
Syphilis (P&S)
9.5
per 100K in 2023
0.0 in 2000
Peak 9.5 in 2023

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

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Knox County vs Ohio and the US

Infection Knox County Ohio US vs Ohio vs US Rank in Ohio
Chlamydia 156.399 cases 461.7 490.7 66.1% below 68.1% below 78th of 88
Gonorrhea 26.817 cases 168 178.2 Too few cases Too few cases –
Syphilis (P&S) 9.56 cases 16.3 15.8 Too few cases Too few cases –

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

Knox County ranks 76th of 88 Ohio counties for combined STD rate in 2023, at 192.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Knox County, with 99 cases at a rate of 156.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Knox County and Ohio. 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.