Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and September 28, 2026.
Montgomery County, Texas, has about 750,000 residents (2024 Census Bureau estimate). A DWI arrest in Montgomery County starts two cases, a criminal case (in the County Court at Law, or the District Court when it is charged as a felony) and a license case before the Department of Public Safety, and leaves three records. This guide follows the arrest from the roadside to the court file and the driving record.
This guide covers the law, the arrest, booking, the court case, the license case, the records and common questions.
Related guides: Montgomery County public records, Montgomery County arrest records, Montgomery County warrants, Montgomery County inmate search, Montgomery County criminal records, Texas arrest records and Texas inmate search.
The DWI Law in Texas
In Texas the offense is DWI, and the limit is 0.08.
Driving in Texas is consent to a breath or blood test when an officer has cause to suspect DWI; the license case that follows a refusal or a failed test is run by the Department of Public Safety, separately from the criminal case.
Texas sets no time limit on prior offenses: every earlier conviction counts toward a repeat charge.
Who Makes DWI Arrests in Montgomery County
The Montgomery County Sheriff's Office and the agencies that report for Conroe, Willis, Magnolia, Shenandoah, Oak Ridge North, Montgomery and five more cities make the DWI arrests in Montgomery County.
The FBI's agency list also places eight other agencies in Montgomery County (the arrest records guide names each one).
Together, the 11 agencies in Montgomery County with all twelve months of 2025 on file reported 11,055 arrests to the FBI that year, all offenses together; the FBI's count for Montgomery County does not break DWI out.
The Cleveland Police Department and the Houston Police Department are each listed by the FBI across several counties including Montgomery County, so their arrests are not broken out for Montgomery County here.
Booking After a DWI Arrest in Montgomery County
A driver arrested for DWI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Montgomery County Sheriff's Office, held about 1,110 people on an average day so far in 2026 by the Vera Institute of Justice's count and has a custody page SearchSystems verified at mcsojail.countygovservices.com/Home/CurrentInmates. The Montgomery County inmate search guide covers the jail in full.
The Court Case
A DWI charge from Montgomery County is brought by the District Attorney in the County Court at Law, or the District Court when it is charged as a felony.
The District Attorney's page SearchSystems verified is at mctxdao.org, phone (936)539-7800.
The court records page SearchSystems verified for the county is at mctx.org/departments/departments_d_-_f/district_clerk/case_inquiry.php, phone 936-539-7855.
Texas has no single public index of every trial court case; each court's records are looked up through that court.
The License Case
A DWI arrest starts two cases: the criminal one above and an administrative one over the license, run by the Department of Public Safety. The driving record, kept by the Texas Department of Public Safety, carries the result of both.
The Records a DWI Leaves
- The arrest report: from the agency that made the arrest, under the Texas Public Information Act.
- The court file: from the County Court at Law, or the District Court when it is charged as a felony, kept by the District Clerk for district court cases and the County Clerk for county court cases.
- The driving record: from the Texas Department of Public Safety.
More on each: Montgomery County arrest records, Montgomery County police reports and Montgomery County court records.
Frequently Asked Questions
What is the DWI limit in Texas?
0.08 percent blood alcohol.
Where is a DWI case from Montgomery County heard?
In the County Court at Law, or the District Court when it is charged as a felony, brought by the District Attorney. The court records page SearchSystems verified for the county is at mctx.org.
Where is a person arrested for DWI in Montgomery County held?
At the county jail, run by the Montgomery County Sheriff's Office, if kept in custody.
Who handles the license after a DWI arrest in Texas?
The Department of Public Safety, in an administrative case separate from the court case.
How long does a DWI count as a prior in Texas?
There is no time limit; every prior conviction counts.
Is this the official Montgomery County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.