The Bailiwick of Guernsey includes the island of Guernsey and other islands such as Alderney, Sark, Herm, Jethou, Brecqhou, and Lihou. Each parish was established, probably in the 11th century, as a religious area, each having its parish church. Administratively each parish is now administered by an elected council known as a Douzaine.

The Bailiwick of Guernsey is a self-governing British Crown Dependency off the coast of Normandy, France, comprising several of the Channel Islands. It has a total land area of 78 square kilometres (30 sq mi) and an estimated total population of 67,334.