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TermDefinition
Administrative boundaryA geographic polygon or polygons representing the perimeter of one administrative unit.  
Administrative heirarchy

A set of recognized and hierarchical levels of administrative authority and geographic partition of a country or territory.  Increasing administrative level numbers represent lower (geographically smaller and administratively subservient) units, with administrative level 0 representing the entire country, administrative level 1 representing the next lower level, and so on.

  • Afghanistan is divided into provinces, which are in turn divided into districts.  Thus Afghanistan's administrative level 0 is the country (Afghanistan), administrative level 1 is the provinces, and administrative level 2 is the districts.


In some countries an administrative level may consist of more than one type of administrative unit.

  • The United States of America's administrative level 1 consists of States, the District of Colombia, and further remote units.
  • Canada's administrative level 1 consists of provinces and territories.
Administrative level
Administrative unit
































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