The Regional Municipality of York was created by the Province of Ontario on January 1, 1971. It is one of six regional municipalities in the province. York Regional Council is composed of 20 members (19 members and the Chair). Mayors of area municipalities and regional councillors sit on both area municipal councils and regional council. The Regional Chair is elected by members of York Regional Council at the inaugural meeting, for a three-year term.

Regional Chair and CEO	Bill Fisch
Town of Aurora	Mayor Tim Jones
Town of East Gwillimbury	Mayor James Young
Town of Georgina	Mayor Jeffrey Holec
	Regional Councillor Danny Wheeler
Township of King	Mayor Margaret Black
Town of Markham	Mayor Don Cousens
	Regional Councillor Frank Scarpitti
	Regional Councillor Gordon Landon
	Regional Councillor Bill O’Donnell
	Regional Councillor Tony Wong
Town of Newmarket	Mayor Tom Taylor
	Regional Councillor Diane Humeniuk
Town of Richmond Hill	Mayor William F. Bell
	Regional Councillor Brenda Hogg
	Regional Councillor David Barrow
City of Vaughan	Mayor Michael Di Biase
	Regional Councillor Gino Rosati
	Regional Councillor Joyce Frustaglio
Town of Whitchurch-Stouffville	Mayor Wayne Emmerson

Bill Fisch Regional Chair and CEO		Tim Jones Mayor Town of Aurora		James Young Mayor Town of East Gwillimbury		Jeffrey Holec Town of Georgina
Danny Wheeler Regional Councillor Town of Georgina		Margaret Black Mayor Township of King		Donald Cousens Mayor Town of Markham		Frank Scarpitti Regional Councillor Town of Markham
Gordon Landon Regional Councillor Town of Markham		Tony Wong Regional Councillor Town of Markham		Bill O'Donnell Regional Councillor Town of Markahm		Tom Taylor Mayor Town of Newmarket
Diane Humeniuk Regional Councillor Town of Newmarket		William F. Bell Mayor Town of Richmond Hill		Brenda Hogg Regional Councillor Town of Richmond Hill		David Burrow Regional Councillor Town of Richmond Hill
Michael Di Biase Mayor City of Vaughan		Joyce Frustaglio Regional Councillor City of Vaughan		Gino Rosati Regional Councillor City of Vaughan		Wayne Emmerson Mayor Town of Whitchurch-Stouffville