In 1966, it was redefined to consist of the part of Metropolitan Toronto bounded on the north by the northern limit, and on the west, south and east by a line drawn from that borough limit south along Highway 400, east along Sheppard Avenue West, south along Jane Street, southeast along Exbury Road, east along Calvington Drive, south along Keele Street, east along Highway 401, south along the Canadian National Railway line, east along Lawrence Avenue West, north along the Spadina Expressway, northeast along Highway 401, north along Bathurst Street, east along Sheppard Avenue West, south along Easton Street, east along Cameron Avenue, and north along Yonge Street to the Metro Toronto limit. It is unclear why the name York Centre was retained as the district was now predominantly in the Borough of North York rather than in the Region of York.