STD Rates in Norfolk County, Massachusetts

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 727,537
Combined
369.8
per 100K
10th / 14
Chlamydia
274.9
per 100K • 2,000 cases
Gonorrhea
90
per 100K • 655 cases
Syphilis P&S
4.9
per 100K • 36 cases

Norfolk County recorded a combined STD rate of 369.8 per 100,000 residents in 2023, ranking 10th of 14 counties in Massachusetts. Reported infections included chlamydia at 274.9 per 100,000 (2,000 cases, 33% below the state rate), gonorrhea at 90.0 per 100,000 (655 cases, 36% below the state rate), syphilis at 4.9 per 100,000 (36 cases, 54% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Norfolk County.

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Norfolk County vs Massachusetts Average

Infection Norfolk County Massachusetts Rate Difference
Chlamydia 274.9 412.7 33% below
Gonorrhea 90 139.8 36% below
Syphilis (P&S) 4.9 10.6 54% below

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Largest cities in Norfolk County, Massachusetts

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

STD testing in Quincy, MA102,114 people → STD testing in Brookline, MA63,266 people → STD testing in Weymouth, MA58,505 people → STD testing in Braintree, MA38,899 people → STD testing in Randolph, MA34,878 people → STD testing in Franklin, MA33,154 people → STD testing in Needham, MA32,459 people → STD testing in Norwood, MA31,542 people → STD testing in Wellesley, MA30,347 people → STD testing in Milton, MA28,587 people →
Show all 18 cities ↓Show fewer cities ↑
STD testing in Dedham, MA25,237 people → STD testing in Holbrook, MA11,380 people → STD testing in North Quincy, MA → STD testing in Canton, MA → STD testing in Medway, MA → STD testing in Norfolk, MA → STD testing in Stoughton, MA → STD testing in Westwood, MA →

Largest Counties in Massachusetts

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

All 14 Massachusetts counties → STD testing in Massachusetts →

FAQs

Norfolk County ranks 10th of 14 Massachusetts counties for combined STD rate in 2023, at 369.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Norfolk County, with 2,000 cases at a rate of 274.9 per 100,000 residents.
STDTest.com lists confidential testing locations across Norfolk County and Massachusetts. Many offer same-day appointments with results in 1–3 days.

Related Resources

STD Testing Window Periods How Soon After Sex to Test STD Symptoms Guide Testing Timeline Chart All Testing Clinics STD Statistics and Data
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