STD Rates in Hamilton County, Indiana

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 371,566
Combined
280.5
per 100K
53rd / 92
Chlamydia
229.3
per 100K • 852 cases
Gonorrhea
47.4
per 100K • 176 cases
Syphilis P&S
3.8
per 100K • 14 cases

Hamilton County recorded a combined STD rate of 280.5 per 100,000 residents in 2023, ranking 53rd of 92 counties in Indiana. Reported infections included chlamydia at 229.3 per 100,000 (852 cases, 53% below the state rate), gonorrhea at 47.4 per 100,000 (176 cases, 67% below the state rate), syphilis at 3.8 per 100,000 (14 cases, 56% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Hamilton County has confidential testing locations available.

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Hamilton County vs Indiana Average

Infection Hamilton County Indiana Rate Difference
Chlamydia 229.3 491 53% below
Gonorrhea 47.4 144 67% below
Syphilis (P&S) 3.8 8.7 56% below

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Largest cities in Hamilton County, Indiana

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

STD testing in Fishers, IN102,337 people → STD testing in Carmel, IN101,651 people → STD testing in Noblesville, IN73,362 people → STD testing in Westfield, IN54,677 people →

Largest Counties in Indiana

Marion County → Lake County → Allen County → St. Joseph County → Elkhart County → Tippecanoe County → Hendricks County → Vanderburgh County → Porter County → Johnson County →

All 92 Indiana counties → STD testing in Indiana →

FAQs

Hamilton County ranks 53rd of 92 Indiana counties for combined STD rate in 2023, at 280.5 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Hamilton County, with 852 cases at a rate of 229.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Hamilton County and Indiana. 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