Two of the most important sociological impacts of suburban living had to do with women and with residential segregation.
The wave of suburbanization after WWII largely excluded African Americans. Because of this, suburbs were essentially all-white while inner cities became largely African American. This led to a more homogeneous experience for suburban whites.
Life in the suburbs also emphasized the family home as a self-contained center of life. This was different from city living where life had been somewhat more communal in apartment buildings. This had a particular impact on women who were stuck in the home without much in the way of adult contact.