The title, "Arcadia," comes from the Latin "Et in Arcadia ego", literally "I, too, have lived in Arcadia" - a Latin way of saying "I, too, have known better times." Arcadia was a paradise in Latin culture and belief.
Inspired by a real-life incident for first year staff writer Daniel Arkin. He had moved into a gated community but was running late and was horrified to be fined $1000 for unpacking the removal vans past the designated hours.
Mulder and Scully go undercover and use the aliases Rob and Laura Petrie - the names of the characters played by Dick Van Dyke and Mary Tyler Moore on The Dick Van Dyke Show (1961).