STD Rates in Dupage County, Illinois

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 921,314
Combined
321.6
per 100K
49th / 102
Chlamydia
261.8
per 100K • 2,412 cases
Gonorrhea
57.4
per 100K • 529 cases
Syphilis P&S
2.4
per 100K • 22 cases

Dupage County reported a combined STD rate of 321.6 per 100,000 residents in 2023, placing it 49th of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 261.8 per 100,000 (2,412 cases, 53% below the state rate), gonorrhea at 57.4 per 100,000 (529 cases, 72% below the state rate), syphilis at 2.4 per 100,000 (22 cases, 79% 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 Dupage County.

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Dupage County vs Illinois Average

Infection Dupage County Illinois Rate Difference
Chlamydia 261.8 557.7 53% below
Gonorrhea 57.4 202.3 72% below
Syphilis (P&S) 2.4 11.6 79% below

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Largest cities in Dupage County, Illinois

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

STD testing in Naperville, IL150,692 people → STD testing in Wheaton, IL53,557 people → STD testing in Downers Grove, IL50,054 people → STD testing in Elmhurst, IL45,671 people → STD testing in Lombard, IL43,619 people → STD testing in Bartlett, IL40,501 people → STD testing in Carol Stream, IL39,460 people → STD testing in Hanover Park, IL36,732 people → STD testing in Addison, IL35,489 people → STD testing in Woodridge, IL33,941 people →
Show all 29 cities ↓Show fewer cities ↑
STD testing in Glendale Heights, IL32,808 people → STD testing in Glen Ellyn, IL28,390 people → STD testing in West Chicago, IL25,395 people → STD testing in Westmont, IL23,724 people → STD testing in Lisle, IL23,407 people → STD testing in Bloomingdale, IL22,457 people → STD testing in Villa Park, IL22,345 people → STD testing in Darien, IL21,879 people → STD testing in Bensenville, IL18,603 people → STD testing in Hinsdale, IL17,175 people → STD testing in Warrenville, IL14,718 people → STD testing in Wood Dale, IL13,933 people → STD testing in Burr Ridge, IL11,141 people → STD testing in Winfield, IL10,095 people → STD testing in Itasca, IL9,355 people → STD testing in Willowbrook, IL9,131 people → STD testing in Clarendon Hills, IL8,659 people → STD testing in Oak Brook, IL8,056 people → STD testing in Free Std Testing Roselle, IL →

Largest Counties in Illinois

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

All 102 Illinois counties → STD testing in Illinois →

FAQs

Dupage County ranks 49th of 102 Illinois counties for combined STD rate in 2023, at 321.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Dupage County, with 2,412 cases at a rate of 261.8 per 100,000 residents.
STDTest.com lists confidential testing locations across Dupage 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