The badge on Peter's fireman helmet is number 57 and is the shape of the Heinz label (Heinz 57 Sauce).
When trying to win a bet with Brian by attempting to become the most popular student at James Woods High Stewie names himself Zach Sawyer, a combination of Zach Morris (Saved by the Bell) and Peyton Sawyer (One Tree Hill)
The title is based on the McDonald's hamburger chain founded in 1940 by Ray Kroc however the name is likely changed to avoid a lawsuit.
McBurgertown is a parody of McDonald's.