Castle (Welsh: Castell) is an electoral ward and community in the City and County of Swansea, Wales, UK. Castle covers most of the heart of the City of Swansea. The community does not have its own community council. The electoral ward consists of some or all of the following areas: Swansea city centre, Brynmelin, Dyfatty, Greenhill, Maritime Quarter, parts of Mount Pleasant, Sandfields and Waun Wen in the parliamentary constituency of Swansea West. The ward borders the wards of St. Thomas to the east; Landore and Cwmbwrla to the north; Townhill and Uplands; and Swansea Bay to the south.