STD Rates in Butler County, Pennsylvania

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

Data Year: 2023 Source: CDC STI Surveillance Population: 198,469
Combined
193
per 100K
46th / 67
Chlamydia
169.8
per 100K • 337 cases
US rate: 490.7
45th of 67 in Pennsylvania
Higher than 20% of US counties
Gonorrhea
20.2
per 100K • 40 cases
US rate: 178.2
45th of 67 in Pennsylvania
Higher than 16% of US counties
Syphilis P&S
3
per 100K • 6 cases
Based on 6 cases — interpret with care
US rate: 15.8

Butler County recorded a combined STD rate of 193.0 per 100,000 residents in 2023, ranking 46th of 67 counties in Pennsylvania. Reported infections included chlamydia at 169.8 per 100,000 (337 cases, 60% below the state rate), gonorrhea at 20.2 per 100,000 (40 cases, 86% below the state rate), syphilis at 3.0 per 100,000 (6 cases, 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 Butler County.

STD Trends in Butler County, 2000–2023

Reported cases per 100,000 residents each year, against the Pennsylvania 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
169.8
per 100K in 2023
0.0 in 2000
Peak 250.7 in 2019
Gonorrhea
20.2
per 100K in 2023
0.0 in 2000
Peak 40.8 in 2020
Syphilis (P&S)
3.0
per 100K in 2023
0.0 in 2000
Peak 4.8 in 2015

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

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Butler County vs Pennsylvania and the US

Infection Butler County Pennsylvania US vs Pennsylvania vs US Rank in Pennsylvania
Chlamydia 169.8337 cases 421.2 490.7 59.7% below 65.4% below 45th of 67
Gonorrhea 20.240 cases 144.7 178.2 86% below 88.7% below 45th of 67
Syphilis (P&S) 36 cases 9.1 15.8 Too few cases Too few cases

Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Pennsylvania’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

Butler County ranks 46th of 67 Pennsylvania counties for combined STD rate in 2023, at 193.0 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Butler County, with 337 cases at a rate of 169.8 per 100,000 residents.
STDTest.com lists confidential testing locations across Butler County and Pennsylvania. 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.