Watch very recent films and TV shows that were produced/shot in your area. The bit part actors are usually local. When I worked on "Johnny Montana" there were a number of actors that fit this mold. One of the actors, Philip Levy, had one line in "Sleepless In Seattle;" he was the cabby that drove Jonah to the Empire State Building. John Gavin, the writer/director/lead actor, saw his face and loved it for the part of "Mr. Muller." Levy and the others were all excellent, had solid experience - and they worked on "experimental" SAG contracts, so were relatively inexpensive.