Oregon is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42° north parallel delineates the southern boundary with California and Nevada.

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In United States terminology, special police can mean:

• Auxiliary police, members of volunteer, unpaid or paid, part-time civilian police, security officer units, interns;

• Company police;

• Special Weapons and Tactics (SWAT);

• Security police; or

• Special Law Enforcement Officers/ Special Jurisdiction Law Enforcement – used in New Jersey to supplement full-time police officers;

 

The term can also refer to limited police power granted in some jurisdictions to lifeguards, SPCA personnel, teachers, and other public sector employees which is incidental to their main responsibilities. Special Police Officers (or SPOs) can be employed to protect large campuses such as theme parks, hospital centers, and commerce centers.

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Some states, such as Maryland, New York, and the District of Columbia, grant full State Police/peace officer authority to SPOs for use in whatever area they are employed to protect. They can make traffic stops in their jurisdiction if they have had accredited training. They are also permitted to conduct traffic control and investigations pertaining to the area protected by them, while a majority of SPOs are armed with a firearm, some states permit the age for an SPO to be 18, while still they can not carry a sidearm. Special police can make a criminal arrest and run blue strobe lights on their vehicle.

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Historically, Oregon had many more special police officers than the state does presently, beginning in the 19th century. While the roles they served have largely been replaced by more conventional law enforcement officers, some special police officers and the authorities for commissioning them remain. For instance, under Oregon law, mayors or similar officials who oversee a municipal water supply system are permitted to appoint special police officers which possess police powers for the purposes of maintaining the purity of drinking water. The regional government Metro appoints special police for the purposes of enforcing parking laws and codes. The city of Portland also commissions special police officers for this purpose.