Minneapolis
From Jenny Everywhere Wiki
When Jenny Everywhere and Kim went through their closet to sort its contents, and they found a stone tablet detailing a ritual to summon the god Tepoztecatl, Jenny mentioned that the ritual wouldn't work anyway because Tepoztecatl “was already living in Minneapolis”. (PROSE: Cleaning Day)
Behind the scenes
Cleaning Day references not only the Aztec god Tepoztēcatl, but specifically the comedy version from the webcomic Wapsi Square, who indeed lived in modern-day Minneapolis with the main human characters.