"There have been two crucial times over the last 60 years when TV shows switched settings, reflecting society’s shifts in the way we have invested in infrastructure and real estate. We are in the middle of the second structural shift right now, which started in the mid-1990s. TV helped to predict that change," write the Leinbergers.
The list has two criteria: "prime-time situation comedies and dramas (no daytime TV, sports, news or reality shows)" and "the built environment — walkable urban or drivable suburban — must play a significant, though generally subtle, role in the show."
Here are a couple of examples of what they came up with, among the six examples of television eras described in the article: