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 October 9, 2026.
Calvert County, Maryland, has about 95,000 residents (2024 Census Bureau estimate). A DUI arrest in Calvert County starts two cases, a criminal case in the District Court and a license case before the Motor Vehicle Administration, 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: Calvert County public records, Calvert County arrest records, Calvert County warrants, Calvert County criminal records, Calvert County court records, Maryland arrest records and Maryland inmate search.
The DUI Law in Maryland
Drunk driving is charged as DUI in Maryland, at a blood alcohol level of 0.08 or more; driving while impaired (DWI) is charged from 0.07.
Driving in Maryland is consent to a breath or blood test when an officer has cause to suspect DUI; the license case that follows a refusal or a failed test is run by the Motor Vehicle Administration, separately from the criminal case.
Who Makes DUI Arrests in Calvert County
The Calvert County Sheriff's Office makes the DUI arrests in Calvert County.
The FBI's agency list also places one more agency in Calvert County: the Calvert County State Police (state police); the Calvert County State Police makes the arrests on the state highways.
The Calvert County Sheriff's Office reported 1,789 arrests to the FBI for 2025, all offenses together; the FBI's count for Calvert County does not break DUI out.
Booking After a DUI Arrest in Calvert County
A driver arrested for DUI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Calvert County Sheriff's Office, held about 110 people on an average day in 2024 by the Vera Institute of Justice's count.
The Court Case
The State's Attorney files the charge, and the case is heard in the District Court.
The State's Attorney's page SearchSystems verified is at calvertcountymd.gov, phone 410-535-1600.
The court records page SearchSystems verified for the county is at courts.state.md.us/clerks/calvert/records, phone 410-535-1600.
Statewide, Maryland Judiciary Case Search is the free statewide case search of every Maryland court.
The License Case
A DUI arrest starts two cases: the criminal one above and an administrative one over the license, run by the Motor Vehicle Administration. The driving record, kept by the Maryland Motor Vehicle Administration, carries the result of both.
The Records a DUI Leaves
- The arrest report: from the agency that made the arrest, under the Maryland Public Information Act.
- The court file: from the District Court, kept by the Clerk of the Circuit Court.
- The driving record: from the Maryland Motor Vehicle Administration.
More on each: Calvert County arrest records, Calvert County police reports and Calvert County court records.
Frequently Asked Questions
What is the DUI limit in Maryland?
0.08 percent blood alcohol; driving while impaired (DWI) is charged from 0.07.
Where is a DUI case from Calvert County heard?
In the District Court, brought by the State's Attorney. The court records page SearchSystems verified for the county is at courts.state.md.us/clerks/calvert/records.
Where is a person arrested for DUI in Calvert County held?
At the county jail, run by the Calvert County Sheriff's Office, if kept in custody.
Who handles the license after a DUI arrest in Maryland?
The Motor Vehicle Administration, in an administrative case separate from the court case.
Is this the official Calvert 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.