The Isles of Scilly (/ˈsɪli/ SIL-ee; Cornish: Syllan) are a small archipelago off the southwestern tip of Cornwall. One of the islands, St Agnes, is over four miles (six kilometres) further south than the most southerly point of the British mainland at Lizard Point, and has the southernmost inhabited settlement in Cornwall, Troy Town.
The total population of the islands at the 2021 United Kingdom census was 2,100 (rounded to the nearest 100). A majority live on one island, St Mary's, and close to half live in Hugh Town; the remainder live on four inhabited "off-islands". Scilly forms part of the ceremonial county of Cornwall, and some services are combined with those of Cornwall. However, since 1890, the islands have had a separate local authority. Since the passing of the Isles of Scilly Order 1930, this authority has held the status of county council, and today it is known as the Council of the Isles of Scilly.