The Tri-Township Fire House is found on route 36/37 on the east side of Delaware. The firehouse is on the north side of the road just east of the railroad trestle after the merging of Williams St and Central Ave. There are currently about 14 attending the continuing class and a few in the beginners class.
Other nearby locations that may interest those in central Ohio are Reynoldsburg, Dublin, Jerome Church, St Stephens, Grady Hospital, and Westerville. There are several classes at a couple of these locations. You can find a pdf of all the classes at the Westerville link.