I don't think that any town in Franklin prohibits OC. I had an officer from Pacific tell me beforethat it they didn't have anything against itand that ever now and again he would see somebody doing it. I just looked at the 2007 ordinance for Pacific,Union, Washington and Sullivan and none of them even have anything on the books about firearms. They are all using state law. Link below for you to use.
You should have no issues what so ever.