The two-tier system introduced in 1975 was superseded by a system of unitary authorities in 1996. The districts of Tayside and Central Scotland all became unitary authorities, with Longforgan being transferred from Dundee to Perth and Kinross. The majority of historic Perthshire lies in Perth and Kinross. The exceptions are the southwestern part that is now in the Stirling council area and a few parishes that are now in Clackmannanshire. Perth and Kinross also contains some areas that were not historically in Perthshire, such as Kinross-shire. The lieutenancy areas in the same area are mostly coterminous with the council areas. Perthshire still exists as a registration county.