STD Rates in Franklin County, Indiana

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

Data Year: 2023 Source: CDC STI Surveillance Population: 23,105
Combined
121.2
per 100K
91st / 92
Chlamydia
108.2
per 100K • 25 cases
US rate: 490.7
87th of 92 in Indiana
Higher than 6% of US counties
Gonorrhea
8.7
per 100K • 2 cases
Based on 2 cases — interpret with care
US rate: 178.2
Syphilis P&S
4.3
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 15.8

Franklin County is among the lower-burden counties in Indiana, reporting a combined STD rate of 121.2 per 100,000 residents in 2023 — 91st of 92 counties. Reported infections included chlamydia at 108.2 per 100,000 (25 cases, 78% below the state rate), gonorrhea at 8.7 per 100,000 (2 cases, too few for a reliable comparison), syphilis at 4.3 per 100,000 (1 case, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Franklin County.

STD Trends in Franklin County, 2000–2023

Reported cases per 100,000 residents each year, against the Indiana rate (dashed). In a county this size a handful of cases moves the rate a long way, so read the shape rather than any single year.

Chlamydia
108.2
per 100K in 2023
0.0 in 2000
Peak 156.6 in 2014
Gonorrhea
8.7
per 100K in 2023
0.0 in 2000
Peak 57.1 in 2020
Syphilis (P&S)
4.3
per 100K in 2023
0.0 in 2000
Peak 4.4 in 2017

Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.

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Franklin County vs Indiana and the US

Infection Franklin County Indiana US vs Indiana vs US Rank in Indiana
Chlamydia 108.225 cases 491 490.7 78% below 77.9% below 87th of 92
Gonorrhea 8.72 cases 144 178.2 Too few cases Too few cases –
Syphilis (P&S) 4.31 case 8.7 15.8 Too few cases Too few cases –

Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Indiana’s counties. The US rate is all 50 states combined. Comparisons are left out where fewer than 20 cases were reported, because a rate built on so few cases can swing widely from one year to the next.

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FAQs

Franklin County ranks 91st of 92 Indiana counties for combined STD rate in 2023, at 121.2 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Franklin County, with 25 cases at a rate of 108.2 per 100,000 residents.
STDTest.com lists confidential testing locations across Franklin County and Indiana. Many offer same-day appointments with results in 1–3 days.
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.