STD Rates in Carroll County, New Hampshire

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

Data Year: 2023 Source: CDC STI Surveillance Population: 52,425
Combined
87.7
per 100K
10th / 10
Chlamydia
76.3
per 100K • 40 cases
US rate: 490.7
10th of 10 in New Hampshire
Higher than 2% of US counties
Gonorrhea
9.5
per 100K • 5 cases
Based on 5 cases — interpret with care
US rate: 178.2
Syphilis P&S
1.9
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 15.8

Carroll County is among the lower-burden counties in New Hampshire, reporting a combined STD rate of 87.7 per 100,000 residents in 2023 — 10th of 10 counties. Reported infections included chlamydia at 76.3 per 100,000 (40 cases, 61% below the state rate), gonorrhea at 9.5 per 100,000 (5 cases, too few for a reliable comparison), syphilis at 1.9 per 100,000 (1 case, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Carroll County.

STD Trends in Carroll 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
76.3
per 100K in 2023
47.8 in 2000
Peak 184.9 in 2017
Gonorrhea
9.5
per 100K in 2023
0.0 in 2000
Peak 23.3 in 2021
Syphilis (P&S)
1.9
per 100K in 2023
0.0 in 2000
Peak 4.1 in 2018

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

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Carroll County vs New Hampshire and the US

Infection Carroll County New Hampshire US vs New Hampshire vs US Rank in New Hampshire
Chlamydia 76.340 cases 196.6 490.7 61.2% below 84.5% below 10th of 10
Gonorrhea 9.55 cases 41.9 178.2 Too few cases Too few cases
Syphilis (P&S) 1.91 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.

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FAQs

Carroll County ranks 10th of 10 New Hampshire counties for combined STD rate in 2023, at 87.7 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Carroll County, with 40 cases at a rate of 76.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Carroll 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.