STD Rates in Porter County, Indiana

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 175,325
Combined
291.4
per 100K
51st / 92
Chlamydia
246.4
per 100K • 432 cases
Gonorrhea
43.9
per 100K • 77 cases
Syphilis P&S
1.1
per 100K • 2 cases

Porter County recorded a combined STD rate of 291.4 per 100,000 residents in 2023, ranking 51st of 92 counties in Indiana. Reported infections included chlamydia at 246.4 per 100,000 (432 cases, 50% below the state rate), gonorrhea at 43.9 per 100,000 (77 cases, 70% below the state rate), syphilis at 1.1 per 100,000 (2 cases, 87% below the state rate). Confidential STD testing is available throughout Porter County — knowing your status is the only way to catch infections that often show no symptoms.

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Porter County vs Indiana Average

Infection Porter County Indiana Rate Difference
Chlamydia 246.4 491 50% below
Gonorrhea 43.9 144 70% below
Syphilis (P&S) 1.1 8.7 87% below

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Largest cities in Porter County, Indiana

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

STD testing in Portage, IN38,082 people → STD testing in Valparaiso, IN34,733 people → STD testing in Chesterton, IN14,446 people →

Largest Counties in Indiana

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

All 92 Indiana counties → STD testing in Indiana →

FAQs

Porter County ranks 51st of 92 Indiana counties for combined STD rate in 2023, at 291.4 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Porter County, with 432 cases at a rate of 246.4 per 100,000 residents.
STDTest.com lists confidential testing locations across Porter 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