STD Rates in Dauphin County, Pennsylvania
2023 CDC surveillance data for Dauphin County, Pennsylvania — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Dauphin County has one of the higher STD burdens in Pennsylvania, with a combined rate of 831.8 per 100,000 residents in 2023 — ranking 2nd of 67 counties. Reported infections included chlamydia at 580.5 per 100,000 (1,679 cases, 38% above the state rate), gonorrhea at 236.1 per 100,000 (683 cases, 63% above the state rate), syphilis at 15.2 per 100,000 (44 cases, 67% above the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Dauphin County has confidential testing locations available.
STD Trends in Dauphin 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.
Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.
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Dauphin County vs Pennsylvania and the US
| Infection | Dauphin County | Pennsylvania | US | vs Pennsylvania | vs US | Rank in Pennsylvania |
|---|---|---|---|---|---|---|
| Chlamydia | 580.51,679 cases | 421.2 | 490.7 | 37.8% above | 18.3% above | 3rd of 67 |
| Gonorrhea | 236.1683 cases | 144.7 | 178.2 | 63.2% above | 32.5% above | 2nd of 67 |
| Syphilis (P&S) | 15.244 cases | 9.1 | 15.8 | 67% above | 3.8% below | 2nd of 67 |
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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