STD Rates in Knox County, Illinois

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 48,406
Combined
419.3
per 100K
35th / 102
Chlamydia
332.6
per 100K • 161 cases
Gonorrhea
82.6
per 100K • 40 cases
Syphilis P&S
4.1
per 100K • 2 cases

Knox County reported a combined STD rate of 419.3 per 100,000 residents in 2023, placing it 35th of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 332.6 per 100,000 (161 cases, 40% below the state rate), gonorrhea at 82.6 per 100,000 (40 cases, 59% below the state rate), syphilis at 4.1 per 100,000 (2 cases, 65% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Knox County has confidential testing locations available.

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Knox County vs Illinois Average

Infection Knox County Illinois Rate Difference
Chlamydia 332.6 557.7 40% below
Gonorrhea 82.6 202.3 59% below
Syphilis (P&S) 4.1 11.6 65% below

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STD testing in Knox County, Illinois

Clinics, free and low-cost testing, and labs near Galesburg.

STD testing in Galesburg, IL29,481 people →

Largest Counties in Illinois

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FAQs

Knox County ranks 35th of 102 Illinois counties for combined STD rate in 2023, at 419.3 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Knox County, with 161 cases at a rate of 332.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Knox County and Illinois. 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