FAQ for
"American Dad!" (2005)

While Langely Falls, according to the show, is located in Virgina, United States, there is no such city in Virgina or any other state in the United States for that matter, with the name of Langley Falls.

It most likely named after Langley, Virgina in which the CIA main headquarters are located.

In the first episode it is said that Roger comes from Area 51. In a later episode it shows Stan searching for Roger with other CIA officers because he has escaped from the lab. Stan gets knocked out in a room, grenades get thrown into the room. Roger throws Stan and himself down a laundry shoot to escape the explosion. To thank Roger, Stan lets him live with the family.

In the Christmas episode, Roger mentioned that he crashed in Roswel 60 years ago.