Many of the neighbourhoods in these areas were built up as streetcar suburbs and contain many dense and mixed-use streets, some of which are one-way.
The "outer ring" suburbs of Etobicoke, Scarborough, and North York are much more suburban in nature, although even these districts have some old-city characteristics (in particular southern Etobicoke along the shore of Lake Ontario) in areas bordering Old Toronto, and have developed modern urban centres of their own, such as North York City Centre around Mel Lastman Square.
also consider it to be a suburb of the main city of Toronto, as many choose to move there in pursuit of a more relaxed and "backwoods" vibe.
Many were recreated or named to reconnect the areas with their past history, early beginnings, or even recent use and prominence.
There was a ward named for the patron saint of each of the three British nationalities: English (St. George), Scottish (St. Andrew), Welsh (St. David) and Irish (St. Patrick).
East York developed contemporaneously with the West End of old Toronto, and it is similar in form and character.
Others, such as Claireville, Islington and Thistletown were former postal villages established when Etobicoke was still a rural township.
Etobicoke is often divided into three zones: north, central, and south, roughly approximate to that of the electoral districts of all three levels of government.
The district of Scarborough extends from the east side of Victoria Park Avenue to the eastern limits of Toronto.
West Rouge was transferred from Pickering to Scarborough in 1974 as part of the establishment of Durham Region.
Many of the neighbourhoods, such as Agincourt, Brown's Corners and Milliken, correspond to former postal villages supporting the then-agrarian township.
The boundaries and names often do not conform to the usage of the general population or designated business improvement areas.
A number of neighbourhood maps of Toronto do exist, some produced by real estate firms and some by Internet portals.
Based on feedback from Toronto Star readers, it has produced the most comprehensive, albeit informal, neighbourhood map.
Due to the growing population in the city and the increasing difficulty of browsing the code-based system, the TREB made a radical change, which is intended to simplify the use of MLS for real estate agents and homebuyers.