Have Arcade Fire's "The Suburbs" playing.
Or Rush's "Subdivisions."
There are many different types of suburbs depending upon geography and economics. There are quite a few wildly different types of suburbs outside the Five Boroughs of of New York City, for example - Long Island (Ocean-side and bay-side communities, some old, some new; lots of those planned communities from the 1950's), Northern New Jersey ("What exit?" Sorry, a joke about the New Jersey Turnpike which runs the length of the state; that's what you ask instead of "what town?"), and Westchester County (a mix of old communities, planned communities of various generations, wealthy, middle-class, lower middle class).
I've lived in seven (7) vastly different suburban communities, most within a radius of 20 miles. As I sit writing this there are "poor" suburbs within two (2) miles south of me and multi-million dollar homes less than three (3) miles north of me.
As to what makes up the suburbs in general? The "tempest in a teapot" that occurs all too frequently - zoning, budgets, pet peeves, school curriculums, local scandals, etc.
Otherwise it's just people in their myriad variations, and their myriad personalities playing out on the suburban stage.
Why not just go to the suburbs and do some first hand research?