STD Rates in Collin County, Texas

2023 CDC surveillance data for Collin County, Texas — chlamydia, gonorrhea, and syphilis rates with state comparisons.

Data Year: 2023 Source: CDC STI Surveillance Population: 1,195,483
Combined
349.4
per 100K
137th / 247
Chlamydia
256.8
per 100K • 3,070 cases
US rate: 490.7
154th of 247 in Texas
Higher than 44% of US counties
Gonorrhea
86.3
per 100K • 1,032 cases
US rate: 178.2
109th of 247 in Texas
Higher than 60% of US counties
Syphilis P&S
6.3
per 100K • 75 cases
US rate: 15.8
125th of 247 in Texas
Higher than 48% of US counties

Collin County recorded a combined STD rate of 349.4 per 100,000 residents in 2023, ranking 137th of 247 counties in Texas. Reported infections included chlamydia at 256.8 per 100,000 (3,070 cases, 48% below the state rate), gonorrhea at 86.3 per 100,000 (1,032 cases, 51% below the state rate), syphilis at 6.3 per 100,000 (75 cases, 58% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Collin County has confidential testing locations available.

STD Trends in Collin County, 2000–2023

Reported cases per 100,000 residents each year, against the Texas 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
256.8
per 100K in 2023
128.3 in 2000
Peak 674.3 in 2016
Gonorrhea
86.3
per 100K in 2023
47.2 in 2000
Peak 218.1 in 2016
Syphilis (P&S)
6.3
per 100K in 2023
1.0 in 2000
Peak 6.3 in 2023

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

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Collin County vs Texas and the US

Infection Collin County Texas US vs Texas vs US Rank in Texas
Chlamydia 256.83,070 cases 491.9 490.7 47.8% below 47.7% below 154th of 247
Gonorrhea 86.31,032 cases 176.4 178.2 51.1% below 51.6% below 109th of 247
Syphilis (P&S) 6.375 cases 15 15.8 58% below 60.1% below 125th of 247

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

Collin County ranks 137th of 247 Texas counties for combined STD rate in 2023, at 349.4 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Collin County, with 3,070 cases at a rate of 256.8 per 100,000 residents.
STDTest.com lists confidential testing locations across Collin County and Texas. 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.