"Ducktown" (noted also in the catchy song as "Ducktown USA") is where this movie fictionally 'happens' - but Ducktown is an actual town in Tennessee, located in the extreme southeast corner of the state. Johnny Knoxville is of course from nearby Knoxville, TN.
At 36min 35, Daltry and June are walking and talking. Daltry pauses while talking with June, and then moves on. When he moves there is a dog behind him that starts running in the opposite direction. Neither he, nor anyone else on his property, owns a dog.
When Frankie gets off the bus and looks around a man carrying a briefcase crosses the street. In the next shot he's crossing the street again, in the same direction.