STD Rates in Grafton County, New Hampshire

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

Data Year: 2023 Source: CDC STI Surveillance Population: 93,160
Combined
202.9
per 100K
4th / 10
Chlamydia
169.6
per 100K • 158 cases
US rate: 490.7
4th of 10 in New Hampshire
Higher than 20% of US counties
Gonorrhea
29
per 100K • 27 cases
US rate: 178.2
6th of 10 in New Hampshire
Higher than 24% of US counties
Syphilis P&S
4.3
per 100K • 4 cases
Based on 4 cases — interpret with care
US rate: 15.8

Grafton County reported a combined STD rate of 202.9 per 100,000 residents in 2023, placing it 4th of 10 New Hampshire counties — in the upper half of the state. Reported infections included chlamydia at 169.6 per 100,000 (158 cases, 14% below the state rate), gonorrhea at 29.0 per 100,000 (27 cases, 31% below the state rate), syphilis at 4.3 per 100,000 (4 cases, 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 Grafton County.

STD Trends in Grafton 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
169.6
per 100K in 2023
64.8 in 2000
Peak 368.4 in 2017
Gonorrhea
29.0
per 100K in 2023
4.9 in 2000
Peak 62.6 in 2022
Syphilis (P&S)
4.3
per 100K in 2023
0.0 in 2000
Peak 4.3 in 2023

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

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Grafton County vs New Hampshire and the US

Infection Grafton County New Hampshire US vs New Hampshire vs US Rank in New Hampshire
Chlamydia 169.6158 cases 196.6 490.7 13.7% below 65.4% below 4th of 10
Gonorrhea 2927 cases 41.9 178.2 30.8% below 83.7% below 6th of 10
Syphilis (P&S) 4.34 cases 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

Grafton County ranks 4th of 10 New Hampshire counties for combined STD rate in 2023, at 202.9 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Grafton County, with 158 cases at a rate of 169.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Grafton 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.