Bi-state Police Departments
United States
Updated - July 14, 2025
Bi-state police departments are local law enforcement agencies that operate across two states, often serving areas that straddle state lines. These agencies are typically established to address unique challenges posed by jurisdictional boundaries, ensuring effective policing and public safety in regions where crime and community needs do not adhere to state borders. These departments may handle a range of law enforcement duties, including traffic enforcement, criminal investigations, and community policing. They often collaborate with local, state, and federal agencies to ensure comprehensive law enforcement coverage. This list includes all known departments with this authority. There may be more that are not listed here.
-Clicking the agency's name takes you to their homepage-
| Agency (Click Me) |
States (or territories) |
|---|---|
| Port Authority of New York and New Jersey Police Department | New York & New Jersey |
| Delaware River Port Authority Police Department | Pennsylvania & New Jersey |
| Delaware River and Bay Authority Police Department | Delaware & New jersey |
| Metro Transit Police Department | DC, Maryland, & Virginia |
| Metropolitan Transportation Authority Police Department | New York & Connecticut |
| Ardmore Police Department | Alabama & Tennessee |
| Colorado City/Hildale City Police Department | Arizona & Utah |
| Delmar Police Department | Delaware & Maryland |
| Texhoma Police Department | Oklahoma & Texas |
| Union City Police Department | Indiana & Ohio |