Bug City is a place where Flik travels to find warrior bugs in order to protect Ant Island from grasshoppers. This city is actually littered things under a trailer. Here, Flik finds a group of recently fired circus bugs and mistakes them as warriors, due to their classic "Robin Hood" act.
In the city, there are buildings made of boxes and cans, sidewalks made of cardboard, and streetlights made of Christmas lights and lightning bugs. While there, Flik encounters granddaddy longlegs, snails, beetles, flies, mosquitoes, slugs, the troupe, and more.
- There is a box that has a picture of The Lion King Musical on it.
- Bug City is a parody of New York City, but also looks like San Francisco and Chicago in certain aspects.
- The trailer and Pizza Planet truck that this city is located underneath also appears in Monsters, Inc., where Randall Boggs was banished to the human world and beaten up by the Trailer Son and Mom.