The electoral wards of Belfast are subdivisions of the city, used primarily for statistics and elections. Belfast had 51 wards from May 1973, which were revised in May 1985 and again in May 1993. The number of wards was increased to 60 with the 2014 changes in local government. Wards are the smallest administrative unit in Northern Ireland and are set by the Local Government Boundaries Commissioner and reviewed every 8–12 years.