To participate in NFIRS fire departments must have an FDID, a Fire Department Identification Number. This is a five-digit number assigned to each department. In Pennsylvania, Fire Department Identification Numbers are assigned by the State Fire Commissioner.
PA FDID’s are five-digit numbers consisting of a two-digit number for the county and a unique three-digit number assigned to the department by a county agency or association. This three digit number could be a company, station, zone or district number.
Departments should always check with the OSFC or your county EMA/911 agency before beginning to use an FDID.