PWCPD has primary jurisdiction in all towns within the county, including Dumfries, Occoquan, Haymarket, and Quantico, which also have their own police departments.

The County Police department also has limited enforcement jurisdiction in the independent city of Manassas through a Memorandum of Understanding (MOU).

The Prince William County Police Department found itself in the news in July 2017 for issuing an arrest warrant for Lucky Whitehead, a player in the National Football League.

At the time of incident in Virginia, Whitehead was in the state of Texas, a fact not investigated by Prince William County officers.

[citation needed] A spokesman for Prince William County police, Jonathan Perok, issued several contradictory official statements on the matter.