Even within the United States, different regions can feel like different worlds.
The most stark contrast I’ve seen is in the indie film Lady Bird where (SPOILERS) there is a setting change from a very small rural American town for most of the plot to New York City at the end of the film, with it’s subways, density, and architecture that felt familiar to any watcher from an urban area.
Similarly, the suburban Texas setting of the King of the Hill deliberately contrasts itself with New York-based shows (referring to Seinfeld as, “I'll tell you what, man, them dang ol' New York boys. Just a show about nothin,’” with other joked about the disdain of many Texans of New Yorkers).
I agree that in real life, Sacramento is no small town, and it was inaccurate to describe it as very small and rural.
However, I remember the depiction of Sacramento in the movie was intended to stand in contrast with a bigger city (which is why a major conflict is about the protagonist wanting to move away).
Reviews by several critics also described that setting as a small town, and I remember reading discussions around the release about how other perspectives of Sacramento could view the place as much larger and diverse.
The film’s writer and director Greta Gerwig more precisely described her view in an SF Chronicle article (https://www.sfchronicle.com/movies/article/On-location-How-L...): “It’s not rural, but it is not like a New York or a San Francisco either. It is somewhere in the middle.”
The most stark contrast I’ve seen is in the indie film Lady Bird where (SPOILERS) there is a setting change from a very small rural American town for most of the plot to New York City at the end of the film, with it’s subways, density, and architecture that felt familiar to any watcher from an urban area.
Similarly, the suburban Texas setting of the King of the Hill deliberately contrasts itself with New York-based shows (referring to Seinfeld as, “I'll tell you what, man, them dang ol' New York boys. Just a show about nothin,’” with other joked about the disdain of many Texans of New Yorkers).