Wullerton is the rival town of Dog River. The rivalry is so intense that whenever anyone in Dog River mentions "Wullerton", they instinctively spit on the ground. ("Ruby Reborn") ("Comedy Night") ("Harvest Dance") ("TV Free Dog River") ("You've Been Great, Goodnight") Wullerton residents do not behave the same way. In a dream Hank has, Davis is forced to take a job as a cop in Wullerton. Davis tells his new partner that he used to work in Dog River, spits and his new partner says, "Why'd you do that?" ("Gopher It")
Trivia
One of the businesses in Wullerton is a call centre as headlined in the Howler. ("Comedy Night")
Wullerton is a squeaky-clean, creepy, Stepford Wives-ish town where everyone is excessively nice, clean and helpful. ("Corner Gas: The Movie (Film)")