STD Rates in Union County, North Carolina

2023 CDC surveillance data for Union County, North Carolina — chlamydia, gonorrhea, and syphilis rates with state comparisons.

Data Year: 2023 Source: CDC STI Surveillance Population: 256,430
Combined
514.8
per 100K
58th / 100
Chlamydia
392.7
per 100K • 1,007 cases
US rate: 490.7
57th of 100 in North Carolina
Higher than 68% of US counties
Gonorrhea
113.1
per 100K • 290 cases
US rate: 178.2
59th of 100 in North Carolina
Higher than 69% of US counties
Syphilis P&S
9
per 100K • 23 cases
US rate: 15.8
75th of 100 in North Carolina
Higher than 58% of US counties

Union County recorded a combined STD rate of 514.8 per 100,000 residents in 2023, ranking 58th of 100 counties in North Carolina. Reported infections included chlamydia at 392.7 per 100,000 (1,007 cases, 35% below the state rate), gonorrhea at 113.1 per 100,000 (290 cases, 53% below the state rate), syphilis at 9.0 per 100,000 (23 cases, 55% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Union County.

STD Trends in Union County, 2000–2023

Reported cases per 100,000 residents each year, against the North Carolina 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
392.7
per 100K in 2023
0.0 in 2000
Peak 451.5 in 2019
Gonorrhea
113.1
per 100K in 2023
0.0 in 2000
Peak 123.8 in 2019
Syphilis (P&S)
9.0
per 100K in 2023
1.6 in 2000
Peak 13.7 in 2022

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

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Union County vs North Carolina and the US

Infection Union County North Carolina US vs North Carolina vs US Rank in North Carolina
Chlamydia 392.71,007 cases 607.9 490.7 35.4% below 20% below 57th of 100
Gonorrhea 113.1290 cases 243.2 178.2 53.5% below 36.5% below 59th of 100
Syphilis (P&S) 923 cases 19.9 15.8 54.8% below 43% below 75th of 100

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

Union County ranks 58th of 100 North Carolina counties for combined STD rate in 2023, at 514.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Union County, with 1,007 cases at a rate of 392.7 per 100,000 residents.
STDTest.com lists confidential testing locations across Union County and North Carolina. 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.