Baltimore County uses several grids and indexes to subdivide the county into manageable areas for map production. Each grid and index has an associated coordinate system. The two principle coordinate systems used by the County are the Baltimore County Metropolitan District Grid System and the Maryland Coordinate System. The most common grids and indexes are: 200 Scale Index:
Description Graphic (PDF)
600 Scale Index:
Description Graphic (PDF)
Key Sheet Grid:
Description Graphic (PDF)
Position Sheet Grid:
Description
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Revised December 19, 2002
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