After thinking about whether Roseanne is set in Elgin, Illinois and the inconsistencies of the show’s location, I arrived at a broader question: does a fictional television show really need a location? And a second question follows: does it serve the writers or the viewers better to have a clear location?
To answer the first question, I think the answer is no. As noted in the earlier posts, much of the action in television dramas and sitcoms takes place among a limited number of characters in a limited number of locations. In some shows, the characters hardly ever leave their residence or work. In other shows, character are out and about more but they are often in generic locations that may signal something about a particular city – skyscrapers! lots of traffic! – but do not necessarily depend on a particular location. Think Friends: they are clearly in New York City yet the unique daily life of the city rarely is part of the plot (perhaps outside of the ongoing question of how people with those kinds of jobs can afford apartments like that). Could the show easily be set in Seattle or London or Houston without substantially altering the key relationships between characters and the narrative arcs? Many shows just need enough information to slot into a typical narrative that fits a location: the big city story, the suburban life, small town doings, etc.
To the second question, I think both the writers and viewers could be served well with some idea of where the show is taking place even as this geographic identity may mean little for the show. Our everyday lives are highly impacted by the spaces in which we operate, even if critics would argue suburbanization has rendered all the American suburbs the same or globalization has homogenized experiences within and across cultures. It might be hard to truly invest in a story or narrative arc if it literally could take place anywhere. Having a recognizable place or name at least gives people something to work with in their imaginations, even if the shows do not fully explore their geographic context. The small nods to geography can also serve to help differentiate shows from each other: the New York version is slightly different compared to the Los Angeles or the Chicago version. (Again, we usually do not get a broad palette of American locations but rather easily identifiable locations.) If anything, the restricted number of possible locations helps studios who can make backlots look like many places. (And you can see this on studio tours: we took a tour a few years ago of Warner Bros. where the set for Gilmore Girls, small town Connecticut, Desperate Housewives, suburban everywhere, and the big city were all a short distance from each other. And once you have viewed these sets up close, you see them all over in commercials, shows, and films.)
Coming back to Roseanne: I do not think it really matters that it is modeled on Elgin, Illinois or uses an exterior shot of a home from Evansville, Indiana. It could easily be set outside of Milwaukee, Cleveland, Buffalo, and dozens of other locations where working-class Americans live. Having a rough approximation of a location outside of Chicago may have helped writers and viewers place the show but it is not terribly consequential for the themes of the show or the characters.