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 21 members (20 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 Robert Grossi
	Regional Councillor Danny Wheeler
Township of King	Mayor Margaret Black
Town of Markham	Mayor Don Cousens
	Regional Councillor Frank Scarpitti
	Regional Councillor Jack Heath
	Regional Councillor Jim Jones
	Regional Councillor Bill O’Donnell
Town of Newmarket	Mayor Tom Taylor
	Regional Councillor A.J. (Tony) Van Bynen
Town of Richmond Hill	Mayor William F. Bell
	Regional Councillor David Barrow
	Regional Councillor Brenda Hogg
City of Vaughan	Mayor Michael Di Biase
	Regional Councillor Mario Ferri
	Regional Councillor Linda D. Jackson
	Regional Councillor Joyce Frustalio
Town of Whitchurch-Stouffville	Mayor Sue Sherban

Bill Fisch Regional Chair and CEO		Mayor Tim Jones Town of Aurora		Mayor James Young Town of East Gwillimbury
Mayor Robert Grossi Town of Georgina		Regional Councillor Danny Wheeler Town of Georgina		Mayor Margaret Black Township of King
Mayor Donald Cousens Town of Markham		Regional Councillor Frank Scarpitti Town of Markham		Regional Councillor Jack Heath Town of Markham
Regional Councillor Jim Jones Town of Markham		Regional Councillor Bill O'Donnell Town of Markham		Mayor Tom Taylor Town of Newmarket
Regional Councillor A.J. (Tony) Van Bynen Town of Newmarket		Mayor William F. Bell Town of Richmond Hill		Regional Councillor David Barrow Town of Richmond Hill
Regional Councillor Brenda Hogg Town of Richmond Hill		Mayor Michael Di Biase City of Vaughan		Regional Councillor Mario Ferri City of Vaughan
Regional Councillor Linda D. Jackson City of Vaughan		Regional Councillor Joyce Frustalio City of Vaughan		Mayor Sue Sherban Township of Whitchurch-Stouffville