STD Rates in Rockingham County, New Hampshire

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

Data Year: 2023 Source: CDC STI Surveillance Population: 320,779
Combined
190.2
per 100K
5th / 10
Chlamydia
154
per 100K • 494 cases
US rate: 490.7
5th of 10 in New Hampshire
Higher than 16% of US counties
Gonorrhea
31.8
per 100K • 102 cases
US rate: 178.2
4th of 10 in New Hampshire
Higher than 27% of US counties
Syphilis P&S
4.4
per 100K • 14 cases
Based on 14 cases — interpret with care
US rate: 15.8

Rockingham County reported a combined STD rate of 190.2 per 100,000 residents in 2023, placing it 5th of 10 New Hampshire counties — in the upper half of the state. Reported infections included chlamydia at 154.0 per 100,000 (494 cases, 22% below the state rate), gonorrhea at 31.8 per 100,000 (102 cases, 24% below the state rate), syphilis at 4.4 per 100,000 (14 cases, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Rockingham County has confidential testing locations available.

STD Trends in Rockingham 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
154.0
per 100K in 2023
64.6 in 2000
Peak 282.4 in 2017
Gonorrhea
31.8
per 100K in 2023
7.9 in 2000
Peak 33.1 in 2021
Syphilis (P&S)
4.4
per 100K in 2023
0.0 in 2000
Peak 5.4 in 2021

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

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Rockingham County vs New Hampshire and the US

Infection Rockingham County New Hampshire US vs New Hampshire vs US Rank in New Hampshire
Chlamydia 154494 cases 196.6 490.7 21.7% below 68.6% below 5th of 10
Gonorrhea 31.8102 cases 41.9 178.2 24.1% below 82.2% below 4th of 10
Syphilis (P&S) 4.414 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

Rockingham County ranks 5th of 10 New Hampshire counties for combined STD rate in 2023, at 190.2 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Rockingham County, with 494 cases at a rate of 154.0 per 100,000 residents.
STDTest.com lists confidential testing locations across Rockingham 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.