The local authorities with the highest proportions of high-level ethnic groups other than “White” were mainly urban areas such as Cardiff, Newport and Swansea.
Yr awdurdodau lleol â'r cyfrannau uchaf o grwpiau ethnig lefel uchel ar wahân i “Gwyn” oedd ardaloedd trefol fel Caerdydd, Casnewydd ac Abertawe yn bennaf.