STD Rates in Lancaster County, Pennsylvania
2023 CDC surveillance data for Lancaster County, Pennsylvania — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Lancaster County reported a combined STD rate of 290.2 per 100,000 residents in 2023, placing it 27th of 67 Pennsylvania counties — in the upper half of the state. Reported infections included chlamydia at 226.5 per 100,000 (1,265 cases, 46% below the state rate), gonorrhea at 59.4 per 100,000 (332 cases, 59% below the state rate), syphilis at 4.3 per 100,000 (24 cases, 53% below the state rate). Confidential STD testing is available throughout Lancaster County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Lancaster 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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Lancaster County vs Pennsylvania and the US
| Infection | Lancaster County | Pennsylvania | US | vs Pennsylvania | vs US | Rank in Pennsylvania |
|---|---|---|---|---|---|---|
| Chlamydia | 226.51,265 cases | 421.2 | 490.7 | 46.2% below | 53.8% below | 32nd of 67 |
| Gonorrhea | 59.4332 cases | 144.7 | 178.2 | 58.9% below | 66.7% below | 20th of 67 |
| Syphilis (P&S) | 4.324 cases | 9.1 | 15.8 | 52.7% below | 72.8% below | 27th 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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