Do We Have This? Is This Tropeable? This is most common in series that feature social commentary. The affairs of the town in question will mirror whatever aspect of larger society the authors want to parody. There are two ways this can work. Either the town literally has everything the plot demands, making its small size an Informed Attribute, or the denizens improvise anything they need through job changing. It's a pattern I've noticed. I'm not really sure how well I've defined it.
- Springfield in The Simpsons. It has two universities, a seaport, an airport, and multiple ethnic neighborhoods. Itchy and Scratchy is supposedly a popular cartoon in that universe, and it's produced in Springfield.
- Free Country, USA in Homestar Runner, despite the extremely limited cast and sets. If you need to buy something, Bubs will be selling it. There are no kids, but Marzipan teaches Homestar, Homsar, and Strong Mad at a preschool.
- Inverted in the Discworld. Ankh-Morpork is supposedly the largest city on the disc, but everyone seems to know everyone there.
- Quahog, Rhode Island in Family Guy.
- The titular South Park.
- Buffy the Vampire Slayer: Sunnydale is a small town with only one nightclub (the Bronze)...but also has a University of California branch and a hidden military base.
Hello, Unknown Troper. You'll need to get known to lend a hand here.