At the beginning of the series, the McGill family moves into number 612, which is directly behind the Johanssen Family on Kimball Street. After the McGill family moves back to NYC in Good-bye Stacey, Good-bye, Jessi's family moves into number 612.
Some families on this street are rather rude and racist to Jessi's family when they first move into the neighborhood. Fawcett Avenue is a tidy, shady street. Most houses have flower gardens, and lots of kids live there.
According to Stacey in The Summer Before, the houses on this street are set closer to the road than other streets in the area.