STD Rates in Suffolk County, New York

2023 CDC surveillance data for Suffolk County, New York — chlamydia, gonorrhea, and syphilis rates with state comparisons.

Data Year: 2023 Source: CDC STI Surveillance Population: 1,523,212
Combined
418.8
per 100K
23rd / 62
Chlamydia
342.5
per 100K • 5,217 cases
US rate: 490.7
19th of 62 in New York
Higher than 61% of US counties
Gonorrhea
70.5
per 100K • 1,074 cases
US rate: 178.2
30th of 62 in New York
Higher than 53% of US counties
Syphilis P&S
5.8
per 100K • 89 cases
US rate: 15.8
35th of 62 in New York
Higher than 46% of US counties

Suffolk County reported a combined STD rate of 418.8 per 100,000 residents in 2023, placing it 23rd of 62 New York counties — in the upper half of the state. Reported infections included chlamydia at 342.5 per 100,000 (5,217 cases, 39% below the state rate), gonorrhea at 70.5 per 100,000 (1,074 cases, 70% below the state rate), syphilis at 5.8 per 100,000 (89 cases, 61% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Suffolk County has confidential testing locations available.

STD Trends in Suffolk County, 2000–2023

Reported cases per 100,000 residents each year, against the New York 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.

Chlamydia
342.5
per 100K in 2023
0.0 in 2000
Peak 363.7 in 2019
Gonorrhea
70.5
per 100K in 2023
0.0 in 2000
Peak 78.8 in 2021
Syphilis (P&S)
5.8
per 100K in 2023
0.1 in 2000
Peak 9.1 in 2022

Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.

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Suffolk County vs New York and the US

Infection Suffolk County New York US vs New York vs US Rank in New York
Chlamydia 342.55,217 cases 558.4 490.7 38.7% below 30.2% below 19th of 62
Gonorrhea 70.51,074 cases 235.6 178.2 70.1% below 60.4% below 30th of 62
Syphilis (P&S) 5.889 cases 14.8 15.8 60.8% below 63.3% below 35th of 62

Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among New York’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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FAQs

Suffolk County ranks 23rd of 62 New York counties for combined STD rate in 2023, at 418.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Suffolk County, with 5,217 cases at a rate of 342.5 per 100,000 residents.
STDTest.com lists confidential testing locations across Suffolk County and New York. Many offer same-day appointments with results in 1–3 days.
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.