It occupied an area east of the Don River from the city limits just north of Danforth Avenue south to Lake Ontario.

In 1999 a major reduction in Ontario seats resulted in Riverdale being merged with part of East York into a larger riding called Broadview-Greenwood.

Its initial borders were Logan Avenue from Ashbridges Bay to the city limits just north of the Danforth.

Three new ridings were created to the east of Riverdale called Greenwood, Woodbine and Beaches.

The eastern boundary was moved to Carlaw Avenue which bordered Greenwood riding.

At Danforth it jogged back east to Coxwell and then followed this street north to the city limits.

The new border consisted of Coxwell Avenue from Lake Ontario north to the railway right-of-way just south of Hanson Street.