STD Rates in Dallas County, Texas

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

Data Year: 2023 Source: CDC STI Surveillance Population: 2,606,335
Combined
1150.7
per 100K
5th / 247
Chlamydia
782.9
per 100K • 20,405 cases
US rate: 490.7
6th of 247 in Texas
Higher than 92% of US counties
Gonorrhea
359.2
per 100K • 9,362 cases
US rate: 178.2
2nd of 247 in Texas
Higher than 94% of US counties
Syphilis P&S
8.6
per 100K • 223 cases
US rate: 15.8
98th of 247 in Texas
Higher than 56% of US counties

Dallas County has one of the higher STD burdens in Texas, with a combined rate of 1,150.7 per 100,000 residents in 2023 — ranking 5th of 247 counties. Reported infections included chlamydia at 782.9 per 100,000 (20,405 cases, 59% above the state rate), gonorrhea at 359.2 per 100,000 (9,362 cases, 104% above the state rate), syphilis at 8.6 per 100,000 (223 cases, 43% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Dallas County has confidential testing locations available.

STD Trends in Dallas 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
782.9
per 100K in 2023
448.7 in 2000
Peak 846.1 in 2022
Gonorrhea
359.2
per 100K in 2023
329.0 in 2000
Peak 419.8 in 2021
Syphilis (P&S)
8.6
per 100K in 2023
4.5 in 2000
Peak 15.9 in 2017

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

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Dallas County vs Texas and the US

Infection Dallas County Texas US vs Texas vs US Rank in Texas
Chlamydia 782.920,405 cases 491.9 490.7 59.2% above 59.5% above 6th of 247
Gonorrhea 359.29,362 cases 176.4 178.2 103.6% above 101.6% above 2nd of 247
Syphilis (P&S) 8.6223 cases 15 15.8 42.7% below 45.6% below 98th 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

Dallas County ranks 5th of 247 Texas counties for combined STD rate in 2023, at 1,150.7 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Dallas County, with 20,405 cases at a rate of 782.9 per 100,000 residents.
STDTest.com lists confidential testing locations across Dallas 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.