STD Rates in Sullivan County, New Hampshire

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

Data Year: 2023 Source: CDC STI Surveillance Population: 43,972
Combined
156.9
per 100K
8th / 10
Chlamydia
141
per 100K • 62 cases
US rate: 490.7
7th of 10 in New Hampshire
Higher than 13% of US counties
Gonorrhea
13.6
per 100K • 6 cases
Based on 6 cases — interpret with care
US rate: 178.2
Syphilis P&S
2.3
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 15.8

Sullivan County is among the lower-burden counties in New Hampshire, reporting a combined STD rate of 156.9 per 100,000 residents in 2023 — 8th of 10 counties. Reported infections included chlamydia at 141.0 per 100,000 (62 cases, 28% below the state rate), gonorrhea at 13.6 per 100,000 (6 cases, too few for a reliable comparison), syphilis at 2.3 per 100,000 (1 case, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Sullivan County has confidential testing locations available.

STD Trends in Sullivan County, 2000–2023

Reported cases per 100,000 residents each year, against the New Hampshire 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
141.0
per 100K in 2023
61.7 in 2000
Peak 292.7 in 2013
Gonorrhea
13.6
per 100K in 2023
2.5 in 2000
Peak 18.9 in 2005
Syphilis (P&S)
2.3
per 100K in 2023
0.0 in 2000
Peak 9.3 in 2017

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

Know your status — get tested today

Same-day testing at 4,500+ locations. No appointment needed. Results in 1–3 days.

Sullivan County vs New Hampshire and the US

Infection Sullivan County New Hampshire US vs New Hampshire vs US Rank in New Hampshire
Chlamydia 14162 cases 196.6 490.7 28.3% below 71.3% below 7th of 10
Gonorrhea 13.66 cases 41.9 178.2 Too few cases Too few cases
Syphilis (P&S) 2.31 case 3.9 15.8 Too few cases Too few cases

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

Find a clinic near you

4,500+ testing locations nationwide. 100% confidential. Most insurance accepted.

FAQs

Sullivan County ranks 8th of 10 New Hampshire counties for combined STD rate in 2023, at 156.9 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Sullivan County, with 62 cases at a rate of 141.0 per 100,000 residents.
STDTest.com lists confidential testing locations across Sullivan County and New Hampshire. 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.