STD Rates in Decatur County, Indiana

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

Data Year: 2023 Source: CDC STI Surveillance Population: 26,402
Combined
401.5
per 100K
27th / 92
Chlamydia
367.4
per 100K • 97 cases
US rate: 490.7
23rd of 92 in Indiana
Higher than 65% of US counties
Gonorrhea
26.5
per 100K • 7 cases
Based on 7 cases — interpret with care
US rate: 178.2
Syphilis P&S
7.6
per 100K • 2 cases
Based on 2 cases — interpret with care
US rate: 15.8

Decatur County reported a combined STD rate of 401.5 per 100,000 residents in 2023, placing it 27th of 92 Indiana counties — in the upper half of the state. Reported infections included chlamydia at 367.4 per 100,000 (97 cases, 25% below the state rate), gonorrhea at 26.5 per 100,000 (7 cases, too few for a reliable comparison), syphilis at 7.6 per 100,000 (2 cases, too few for a reliable comparison). Confidential STD testing is available throughout Decatur County — knowing your status is the only way to catch infections that often show no symptoms.

STD Trends in Decatur 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
367.4
per 100K in 2023
0.0 in 2000
Peak 367.4 in 2023
Gonorrhea
26.5
per 100K in 2023
0.0 in 2000
Peak 98.2 in 2020
Syphilis (P&S)
7.6
per 100K in 2023
0.0 in 2000
Peak 11.4 in 2021

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

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Decatur County vs Indiana and the US

Infection Decatur County Indiana US vs Indiana vs US Rank in Indiana
Chlamydia 367.497 cases 491 490.7 25.2% below 25.1% below 23rd of 92
Gonorrhea 26.57 cases 144 178.2 Too few cases Too few cases –
Syphilis (P&S) 7.62 cases 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

Decatur County ranks 27th of 92 Indiana counties for combined STD rate in 2023, at 401.5 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Decatur County, with 97 cases at a rate of 367.4 per 100,000 residents.
STDTest.com lists confidential testing locations across Decatur 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.