Primary State Agencies

United States

Updated - July 12, 2025

Each state has a primary police agency or division that is used by the state to enforce state law, especially traffic laws, just as munincipalities do with their police departments for local laws and ordinances. Some of these agencies are smaller organizations or divisions of a larger organization such as a Department of Public Safety. Others are independent police departments. Duties very by state, but each of these agencies, or divisions, employ the state troopers that you see out on the roads.

-Clicking the agency's name takes you to their homepage-

Agency
(Click Me)
States
(or territories)
Alabama Law Enforcement Agency - Highway Patrol Division Alabama
Alaska State Troopers Alaska
Arizona Department of Public Safety - Highway Patrol Division Arizona
Arkansas State PoliceArkansas
California Highway PatrolCalifornia
Colorado State PatrolColorado
Connecticut State PoliceConnecticut
Delaware State PoliceDelaware
Florida Highway PatrolFlorida
Georgia State PatrolGeorgia
Hawaii State Sheriff / Hawaii State PoliceHawaii
Idaho State PoliceIdaho
Illinois State PoliceIllinois
Indiana State PoliceIndiana
Iowa State PatrolIowa
Kansas Highway PatrolKansas
Kentucky State PoliceKentucky
Louisiana State PoliceLouisiana
Maine State PoliceMaine
Maryland State PoliceMaryland
Massachusetts State PoliceMassachusetts
Michigan State PoliceMichigan
Minnesota State PatrolMinnesota
Mississippi Highway PatrolMississippi
Missouri State Highway PatrolMissouri
Montana Highway PatrolMontana
Nebraska State PatrolNebraska
Nevada State PoliceNevada
New Hampshire State PoliceNew Hampshire
New Jersey State PoliceNew Jersey
New Mexico State PoliceNew Mexico
New York State PoliceNew York
NC State Highway PatrolNorth Carolina
ND Highway PatrolNorth Dakota
Ohio State Highway PatrolOhio
Oklahoma Highway PatrolOklahoma
Oregon State PoliceOregon
Pennsylvania State PolicePennsylvania
Rhode Island State PoliceRhode Island
SC Highway PatrolSouth Carolina
SD Highway PatrolSouth Dakota
Tennessee Highway PatrolTennessee
Texas Highway PatrolTexas
Utah Highway PatrolUtah
Virginia State PoliceVirginia
Washington State PatrolWashington
West Virginia State PoliceWest Virginia
Wisconsin State PatrolWisconsin
Wyoming Highway PatrolWyoming