What are judicial districts?
It generally refers to the areas in which a specific court has jurisdiction, sometimes pertaining to geographical (territorial) location and/or legal jurisdiction. The jurisdiction of every court is determined by the statute or constitution that created the court. Jurisdiction can be federal or state or a choice between the two, depending upon the legal issues involved.
There are 89 districts in the 50 states, District courts also exist in Puerto Rico, the Virgin Islands, the District of Columbia, Guam, and the Northern Mariana Islands. In total there are 94 U.S. district courts. Some states, such as Alaska, are composed of a single judicial district. Others, such as California, are composed of multiple judicial districts.
There are 94 districts within twelve regional Circuits* in the federal Judicial Branch. Ninety are within the United States, proper (including the District of Columbia); the other four are in Puerto Rico and the US Territories of Guam, the Virgin Islands, and the Northern Marianna Islands. * There are thirteen Circuits, total; twelve are territorial, one has national jurisdiction over special subject matter cases.
The United States court system is divided into judicial districts at all levels of government. Usually, municipal courts are lowest, district courts at the state level are next, and state supreme courts are the highest in any state. Federally, the United States is divided into district courts, with the Supreme Court being the highest in the country. There may also be appeal courts in between any of those levels.
In Washington state, a public agency is defined as: "Washington State counties, cities, school districts, fire districts, water & sewer districts, health districts, parks & recreation districts, transit districts, irrigation districts, library districts, port districts, public facility districts, public utility districts, housing districts, and other authorized special districts who use MRSC Rosters as their small public works and consultant roster system." In other words, it's basically public services and organizations that serve the community.