20230217 16143900 1.0 TRUE Local Municipal Boundary Line Shows the regional boundary jurisdiction between neighbouring municipalities. The municipal boundaries define the boundaries between the Region's nine area municipalities: Aurora, East Gwillimbury, Georgina, King, Markham, Newmarket, Richmond Hill, Whitchurch-Stouffville and Vaughan. For the York Region Official Plan – 2010, Office Consolidation Fall 2018.