term:

District

district n

: a territorial division (as of a nation, state, county, or city) for administrative, judicial, electoral, or other purposes: as
a : an administrative unit esp. of a town or city established for the performance of a special governmental function [the water ] [park ]
b : congressional district
c : one of the divisions of the United States or of the individual states served by a particular federal or state court see also the Judicial System in the back matter