Castletown, Isle of Man House of Keys moved from Castletown to Douglas. The Isle of Man Census 2011 lists the town's population as 3,097 (2006: 3,109) It is the fourth largest town on the island, after Douglas, Ramsey and Peel, but is also smaller than Onchan and Port Erin, which have the status of villages. The town lies on the northwest side of Castletown Bay. The opposite shore of the bay is the west coast of the distinctively-shaped Langness Peninsula. To the north-east are Ronaldsway Airport and industrial zone, and the village of Ballasalla; to the north-west the villages of Ballabeg and Colby; and
Ballabeg, Lonan Ballabeg is mainly agricultural land used for the grazing of sheep. There are areas of mature and newly planted woodland (including a nationally important cliff-side ancient oak forest remnant), gorse, brooghs (headlands) and small dubs or ponds. The A2 Douglas to Ramsey road bisects the settlement. The Manx Electric Railway runs through the settlement and has a level crossing there. The Raad ny Foillan long-distance path also passes through Ballabeg. The settlement has no defined boundaries but is said to be bounded by the Raad Ballagawne in the south, the Irish Sea (Laxey Bay) in the east, Church Road in