STD Rates in Greene County, Illinois

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 11,541
Combined
320.6
per 100K
50th / 102
Chlamydia
268.6
per 100K • 31 cases
Gonorrhea
43.3
per 100K • 5 cases
Syphilis P&S
8.7
per 100K • 1 cases

Greene County reported a combined STD rate of 320.6 per 100,000 residents in 2023, placing it 50th of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 268.6 per 100,000 (31 cases, 52% below the state rate), gonorrhea at 43.3 per 100,000 (5 cases, 79% below the state rate), syphilis at 8.7 per 100,000 (1 case, 25% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Greene County has confidential testing locations available.

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Greene County vs Illinois Average

Infection Greene County Illinois Rate Difference
Chlamydia 268.6 557.7 52% below
Gonorrhea 43.3 202.3 79% below
Syphilis (P&S) 8.7 11.6 25% below

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Largest Counties in Illinois

Cook County → Dupage County → Lake County → Will County → Kane County → Mchenry County → Winnebago County → Madison County → St. Clair County → Champaign County →

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FAQs

Greene County ranks 50th of 102 Illinois counties for combined STD rate in 2023, at 320.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Greene County, with 31 cases at a rate of 268.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Greene County and Illinois. Many offer same-day appointments with results in 1–3 days.

Related Resources

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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