Castletown
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|---|---|
 Castle Rushen seen across Castletown Harbour at low tide | |
  Castletown Location within the Isle of Man | |
| Population | 3,206 (Isle of Man census 2021)[1] |
| OS grid reference | SC263675 |
| • Douglas | 8.9 miles (14 km) ENE |
| Parish | Malew |
| Sheading | Rushen |
| Crown dependency | Isle of Man |
| Post town | ISLE OF MAN |
| Postcode district | IM9 |
| Dialling code | 01624 |
| Police | Isle of Man |
| Fire | Isle of Man |
| Ambulance | Isle of Man |
| House of Keys | Arbory, Castletown & Malew |
Castletown (Manx: Balley y Chashtal, pronounced [ˈbalʲə ˈxaʃtʃəl]) is a town in the Isle of Man, geographically within the historical parish of Malew but administered separately. Lying at the south of the island, it was the Manx capital until 1869. The centre of town is dominated by Castle Rushen, a well-preserved medieval castle, originally built for a Viking king.