STD Rates in Monmouth County, New Jersey

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

Data Year: 2023 Source: CDC STI Surveillance Population: 642,709
Combined
292.5
per 100K
14th / 21
Chlamydia
240.7
per 100K • 1,547 cases
US rate: 490.7
13th of 21 in New Jersey
Higher than 40% of US counties
Gonorrhea
45.4
per 100K • 292 cases
US rate: 178.2
15th of 21 in New Jersey
Higher than 37% of US counties
Syphilis P&S
6.4
per 100K • 41 cases
US rate: 15.8
10th of 21 in New Jersey
Higher than 48% of US counties

Monmouth County recorded a combined STD rate of 292.5 per 100,000 residents in 2023, ranking 14th of 21 counties in New Jersey. Reported infections included chlamydia at 240.7 per 100,000 (1,547 cases, 37% below the state rate), gonorrhea at 45.4 per 100,000 (292 cases, 58% below the state rate), syphilis at 6.4 per 100,000 (41 cases, 21% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Monmouth County has confidential testing locations available.

STD Trends in Monmouth County, 2000–2023

Reported cases per 100,000 residents each year, against the New Jersey 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
240.7
per 100K in 2023
70.8 in 2000
Peak 286.7 in 2018
Gonorrhea
45.4
per 100K in 2023
38.6 in 2000
Peak 60.6 in 2021
Syphilis (P&S)
6.4
per 100K in 2023
0.2 in 2000
Peak 6.8 in 2020

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

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Monmouth County vs New Jersey and the US

Infection Monmouth County New Jersey US vs New Jersey vs US Rank in New Jersey
Chlamydia 240.71,547 cases 384.1 490.7 37.3% below 50.9% below 13th of 21
Gonorrhea 45.4292 cases 109.1 178.2 58.4% below 74.5% below 15th of 21
Syphilis (P&S) 6.441 cases 8.1 15.8 21% below 59.5% below 10th of 21

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

Monmouth County ranks 14th of 21 New Jersey counties for combined STD rate in 2023, at 292.5 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Monmouth County, with 1,547 cases at a rate of 240.7 per 100,000 residents.
STDTest.com lists confidential testing locations across Monmouth County and New Jersey. 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.