Texas DWI Statistics: How County and BAC Affect Case Outcomes

On average, more than 90,000 people are arrested for DWI each year, and over 1,000 deaths are caused by drunk driving, making it one of the top states for DWI fatalities.

In this analysis, Michael & Associates breaks down publicly available government data with court outcome patterns to explain sentencing trends.

Last updated: March 2026

Key Takeaways

Texas DWI arrests have declined over the past decade, while alcohol-related traffic fatalities increased after 2020.
Harris County records the highest number of DWI arrests year over year.
Higher BAC levels correlate with increased likelihood of conviction, but BAC alone does not determine case outcomes.

Texas DWI Statistics

While arrests have dropped by nearly 33% over the last decade, they remain high, with over 50% of offenders aged 21–39. Here's a look at some of the key statistics compiled through publicly available data:

DWI Demographics: Who is Arrested for DWI in Texas?

Of the 90,000 annual arrests, about 4,000 of those are DUI, meaning they involve drivers under age 21
Between 75% and 79% of DWI suspects are male
Texans between the ages of 20 and 24 are the most common DWI offenders
Harris County had the most arrests in 2024, with 12,000 charges
A report from the Texas Department of Public Safety shows that about 74.1% of DWI defendants are white, 25% are Black, and the remainder are categorized as "other races."
That same report said that 42% of DWI defendants are Hispanic, while 58% are other ethnicities.

Impaired driving caused 14,389 fatalities in Texas between 2014 and 2023. That's an average of more than 1,000 deaths per year.
More than 37% of traffic fatalities in Texas involved drivers who were impaired by drugs and/or alcohol
The majority of DWI fatalities occur between 2 a.m. and 3 a.m. on Saturday or Sunday.
Fatalities are highest among men between the ages of 19 and 35.
July Fourth and New Year's Eve are peak times for DWI arrests.

Source: Texas Department of Motor Vehicles Open Records Portal

Texas DWI Arrest Trends by County

Texas DWI statistics are frequently reported as statewide totals, but arrest data alone won't account for how DWI cases are actually resolved.

The reality is that DWI outcomes in Texas vary widely by county and by the blood alcohol concentration (BAC) alleged. Each county has different lab procedures, prosecution policies, and court practices. There is no consistent statewide standard. A drug or alcohol case that might be resolved with a simple plea deal in Bexar County could have a much harsher outcome in nearby Comal County, a pattern that's also true between Dallas County (relatively lenient for first-time offenders) and Collin County.

The Texas Department of Public Safety (DPS) publishes annual arrest data by offense and county. These reports establish arrest volumes but do not track case outcomes. As expected, Harris County regularly reports the highest number of DWI arrests.

Typical Annual DWI Arrest Volume in Texas's Five Largest Counties

County	Estimated Annual Arrests
Harris County	~10,000 to 12,000
Dallas County	~6,000 to 7,000
Bexar County	~5,000 to 6,000
Tarrant County	~5,000 to 5,500
Travis County	~2,500 to 3,000

Primary data source: Texas Department of Public Safety (DPS)

Note: Arrest volume figures are compiled from DPS Uniform Crime Reporting (UCR) and Texas Crime Reports.

However, the DPS arrest data does not indicate guilty pleas, conviction rates, dismissals, or charge reductions.

DWI Dismissal and Reduction Rates by County

Primary sources:

County criminal court disposition records
Aggregated Texas court outcome data
Defense-side outcome analytics

Texas does not maintain a centralized database reporting DWI dismissals, reductions, or convictions by county. As a result, outcome data is only available through reports from county courts.

Typical Outcome Ranges (First-Offense, Non-Injury DWI)

Each year, approximately 63% of Texas's 90,000 DWI defendants (56,700) pleaded guilty. Another 5% (4,500) of those cases were DUI, which typically only involves a citation.

Of the remaining 28,800 people, about 70% (20,160) who pleaded not guilty were convicted of their original charge. The remaining 8,640 had other outcomes.

Publicly available sentencing information shows that convictions are less likely if you were arrested in one of Texas's five largest counties.

County	Dismissal rate	Reduction rate	Resolved without a conviction
Dallas County	18 to 25%	25 to 35%	45 to 55%
Harris County	10 to 15%	30 to 40%	40 to 50%
Travis County	15 to 22%	28 to 38%	45 to 55%
Bexar County	8 to 12%	20 to 30%	30 to 40%
Tarrant County	10 to 14%	22 to 32%	35 to 45%

Source: Travis County Court Data

Definitions

Dismissal: Case terminated without conviction
Reduction: DWI reduced to a non-DWI offense
Non-Conviction Resolution: Any outcome other than a final DWI conviction

Why Outcomes Differ by County

DWI laws are consistent throughout Texas. The variation in case outcomes is due to differences in each county's court system.

Dallas County: Courts rely heavily on blood testing, and consistent laboratory delays increase opportunities for suppression and dismissals.
Harris County: The high case volume and aggressive charging lead to more negotiated reductions than outright dismissals.
Travis County: Fewer traffic stops on average and higher refusal rates offer opportunities to negotiate dismissals based on constitutional issues.
Bexar County: Faster case timelines limit leverage caused by delays, lowering dismissal rates unless issues arise with evidence.
Tarrant County: Mixed urban-suburban enforcement produces outcomes that are primarily dependent on blood alcohol concentration and the location of your traffic stop.

Typical Outcomes by BAC Tier

About 42% of drivers killed in Texas crashes in 2022 had high blood alcohol levels.

Texas law presumes a driver is intoxicated with a BAC of 0.08% or higher. A BAC greater than 0.15% enhances a standard first-offense DWI to a Class A misdemeanor. But while BAC is evidence, it is not definitive. It can be challenged, and it won't always affect the outcome of a DWI case.

To show how blood alcohol concentration can affect case outcomes, the following table shows typical outcome ranges for a standard DWI and those with elevated charges due to higher BACs.

These are averages calculated using the available data. Not all Texas counties consistently report this information, so it's important to ask your lawyer about common case outcomes in the county in which you were arrested.

BAC Level	Conviction Rate	Reduction Rate	Dismissal Rate
Below 0.08	40 to 55%	25 to 35%	15 to 30%
0.08–0.149	55 to 65%	20 to 30%	10 to 20%
≥ 0.15	70 to 85%	10 to 20%	5 to 15%

Below 0.08: Outcomes depend on police officer observations rather than chemical evidence, increasing dismissal rates and the likelihood of charge reductions.
0.08–0.149: Outcomes will depend heavily on testing reliability and whether police officers followed proper procedures.
≥ 0.15: Enhanced penalties increase the risk of a conviction, but scientific and constitutional challenges are a defense option.

Arrest Statistics vs. Case Outcomes

An arrest for DWI in Texas:

Is not proof of intoxication
Does not guarantee a conviction
Does not account for suppressed evidence or whether someone's constitutional rights were violated

Many DWI cases are resolved without a conviction due to invalid warrants for chemical testing, laboratory errors, chain-of-custody failures, or police officer noncompliance.

Frequently Asked Questions

Does a higher BAC always mean a DWI conviction in Texas?

No. A higher BAC increases the likelihood of conviction, but cases can still be dismissed or reduced on evidentiary or constitutional grounds.

Which Texas counties dismiss DWI cases most often?

Large urban counties such as Dallas and Travis historically show higher dismissal rates due to laboratory and procedural challenges.

Is a BAC of 0.15 automatically a Class A DWI?

Yes. Texas law elevates a first DWI to a Class A misdemeanor when the BAC is≥ 0.15, though the enhancement does not eliminate defenses.

Do blood tests make DWI cases harder or easier to dismiss?

Blood tests can increase the likelihood of dismissal when warrants, collection, storage, or laboratory analysis fail to meet legal standards.

Methodology and Sources

Texas does not publish official county-level DWI outcomes broken down by BAC. This analysis relies on:

Texas Department of Public Safety (DPS): Arrest counts by county and year
Texas Department of Transportation (TxDOT): Alcohol-related crash and fatality data
National Highway Traffic Safety Administration (NHTSA): BAC impairment research and national benchmarks
County criminal court records: Case disposition patterns (dismissed, reduced, convicted)
Michael & Associates research