Prosper has grown from a small farm town into one of the fastest-growing suburbs in North Texas, and it straddles two counties: the eastern side is in Collin County and the western side in Denton County. After a Prosper DWI arrest, the first question is which side of the line the stop happened on, because that decides which District Attorney prosecutes the case and which courthouse you’ll be driving to.
The two counties have different prosecutors, judges, and practices. Knowing both matters.

Most stops in town are made by the Prosper Police Department on Preston Road, US-380, or the neighborhood roads between them. On the Dallas North Tollway and US-380, the stop may be made by a state trooper. A traffic stop near the Gates of Prosper on a Saturday night can turn into a DWI investigation within minutes.
A first DWI is a Class B misdemeanor with 72 hours to 180 days in jail and a fine up to $2,000; at 0.15 or more it becomes a Class A misdemeanor. A conviction adds a state traffic fine of $3,000 or more. Deferred adjudication is available for many first offenses, except at 0.15 or above or for commercial license holders.
Al Rowland is a former police officer certified to administer Standardized Field Sobriety Tests and a former prosecutor in Colorado. He checks every part of a Prosper arrest: the reason for the stop, how the field sobriety tests were given and scored, the breath or blood testing, and how the prosecutor is likely to see the case.
The address of the stop decides it. Your bond paperwork and the arrest report usually show the county; your lawyer will confirm it immediately.
Yes. The courthouse, the prosecutor’s office, and local practices all differ, and so can the realistic options for resolving the case.
Yes. We defend DWI cases throughout Collin and Denton Counties.
Call (469) 895-6555 or request a free, confidential DWI case review. Our Frisco office at 6160 Warren Pkwy, Suite 100, is about 15 minutes south of Prosper on the Dallas North Tollway. See also: Collin County DWI defense.
This page provides general information, not legal advice. Every case depends on its own facts.