STD Rates in Will County, Illinois

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 700,829
Combined
432.5
per 100K
32nd / 102
Chlamydia
337.6
per 100K • 2,366 cases
Gonorrhea
90.5
per 100K • 634 cases
Syphilis P&S
4.4
per 100K • 31 cases

Will County reported a combined STD rate of 432.5 per 100,000 residents in 2023, placing it 32nd of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 337.6 per 100,000 (2,366 cases, 39% below the state rate), gonorrhea at 90.5 per 100,000 (634 cases, 55% below the state rate), syphilis at 4.4 per 100,000 (31 cases, 62% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Will County has confidential testing locations available.

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Will County vs Illinois Average

Infection Will County Illinois Rate Difference
Chlamydia 337.6 557.7 39% below
Gonorrhea 90.5 202.3 55% below
Syphilis (P&S) 4.4 11.6 62% below

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Largest cities in Will County, Illinois

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

STD testing in Joliet, IL150,445 people → STD testing in Bolingbrook, IL74,096 people → STD testing in Plainfield, IL46,708 people → STD testing in Romeoville, IL41,152 people → STD testing in New Lenox, IL28,006 people → STD testing in Lockport, IL26,409 people → STD testing in Homer Glen, IL24,529 people → STD testing in Frankfort, IL20,651 people → STD testing in Crest Hill, IL20,628 people → STD testing in Mokena, IL20,021 people →
Show all 16 cities ↓Show fewer cities ↑
STD testing in Shorewood, IL18,343 people → STD testing in Channahon, IL13,927 people → STD testing in Manhattan, IL11,026 people → STD testing in Frankfort Square, IL9,560 people → STD testing in Crete, IL8,386 people → STD testing in Goodings Grove, IL →

Largest Counties in Illinois

Cook County → Dupage County → Lake 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

Will County ranks 32nd of 102 Illinois counties for combined STD rate in 2023, at 432.5 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Will County, with 2,366 cases at a rate of 337.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Will 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