STD Rates in Barnstable County, Massachusetts
2023 CDC surveillance data for Barnstable County, Massachusetts — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Barnstable County is among the lower-burden counties in Massachusetts, reporting a combined STD rate of 354.2 per 100,000 residents in 2023 — 11th of 14 counties. Reported infections included chlamydia at 256.3 per 100,000 (594 cases, 38% below the state rate), gonorrhea at 91.9 per 100,000 (213 cases, 34% below the state rate), syphilis at 6.0 per 100,000 (14 cases, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Barnstable County has confidential testing locations available.
STD Trends in Barnstable County, 2000–2023
Reported cases per 100,000 residents each year, against the Massachusetts 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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Barnstable County vs Massachusetts and the US
| Infection | Barnstable County | Massachusetts | US | vs Massachusetts | vs US | Rank in Massachusetts |
|---|---|---|---|---|---|---|
| Chlamydia | 256.3594 cases | 412.7 | 490.7 | 37.9% below | 47.8% below | 11th of 14 |
| Gonorrhea | 91.9213 cases | 139.8 | 178.2 | 34.3% below | 48.4% below | 7th of 14 |
| Syphilis (P&S) | 614 cases | 10.6 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Massachusetts’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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