The lowest estimated employment rates were in Merthyr Tydfil (68.8%), Swansea (69.1%) and Blaenau Gwent (69.8%).
Roedd y cyfraddau cyflogaeth amcangyfrifedig isaf ym Merthyr Tudful (68.8%), Abertawe (69.1%) a Blaenau Gwent (69.8%).