The history of local government in Wales in a recognisably modern form emerged during the late 19th century. Administrative counties and county boroughs were first established in Wales in 1889. Urban and rural districts were formed in 1894. These were replaced in 1974 by a two-tier authority system across the country comprising eight counties and, within them, thirty-seven districts. This system was itself replaced by the introduction of 22 single-tier authorities in 1996.