Township, Range, Section - components of the Public Land Survey System () in the United States or Dominion Land Survey (DLS) in Canada.

These land surveys are gridded reference systems divided up into cells. The primary unit is the numbered township. Townships are referenced as being east/west of a particular meridian (range). Each township is divided into 36 sections. Taken together they can identify a specific parcel of land. For example:

Section 10, Township 5 North, Range 68 West of the 6th Principle Meridian

Further subdivisions to provide even more specific reference can also occur, such as quarters, quarter-quarters, and government lots.

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