But why not also talk to a random selection of people in the city? Go door to door in a random selection that was done beforehand. Maybe you'll figure out what the community as a whole has trouble with or cares more about.
As someone who does a lot of political canvassing this isn’t a good use of the city’s resources. From personal experience I’d estimate that less than 5% of residents open their doors. Of the amount that do open maybe about half just want to tell you not to solicit. Further it’s almost impossible to canvass most apartment buildings that have access control.