STD Rates in Worcester County, Massachusetts

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 866,910
Combined
416.4
per 100K
8th / 14
Chlamydia
329.1
per 100K • 2,853 cases
Gonorrhea
81.4
per 100K • 706 cases
Syphilis P&S
5.9
per 100K • 51 cases

Worcester County recorded a combined STD rate of 416.4 per 100,000 residents in 2023, ranking 8th of 14 counties in Massachusetts. Reported infections included chlamydia at 329.1 per 100,000 (2,853 cases, 20% below the state rate), gonorrhea at 81.4 per 100,000 (706 cases, 42% below the state rate), syphilis at 5.9 per 100,000 (51 cases, 44% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Worcester County has confidential testing locations available.

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Worcester County vs Massachusetts Average

Infection Worcester County Massachusetts Rate Difference
Chlamydia 329.1 412.7 20% below
Gonorrhea 81.4 139.8 42% below
Syphilis (P&S) 5.9 10.6 44% below

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Largest cities in Worcester County, Massachusetts

Largest first, by Census population. Each city page lists nearby clinics, free and low-cost testing, and labs.

STD testing in Worcester, MA207,055 people → STD testing in Leominster, MA43,909 people → STD testing in Fitchburg, MA41,798 people → STD testing in Milford, MA27,731 people → STD testing in Gardner, MA21,148 people → STD testing in Southbridge, MA17,928 people → STD testing in Webster, MA12,228 people → STD testing in Auburn, MA → STD testing in Blackstone, MA → STD testing in Charlton, MA →
Show all 18 cities ↓Show fewer cities ↑
STD testing in Dudley, MA → STD testing in Grafton, MA → STD testing in Holden, MA → STD testing in Leicester, MA → STD testing in Millbury, MA → STD testing in Shrewsbury, MA → STD testing in Sutton, MA → STD testing in Uxbridge, MA →

Largest Counties in Massachusetts

Middlesex County → Essex County → Suffolk County → Norfolk County → Bristol County → Plymouth County → Hampden County → Barnstable County → Hampshire County → Berkshire County →

All 14 Massachusetts counties → STD testing in Massachusetts →

FAQs

Worcester County ranks 8th of 14 Massachusetts counties for combined STD rate in 2023, at 416.4 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Worcester County, with 2,853 cases at a rate of 329.1 per 100,000 residents.
STDTest.com lists confidential testing locations across Worcester County and Massachusetts. Many offer same-day appointments with results in 1–3 days.

Related Resources

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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.
Sources