The lowest estimated employment rates were in Merthyr Tydfil (65.8%), Rhondda Cynon Taf (67.3%) and Denbighshire (69.3%).
Roedd y cyfraddau cyflogaeth amcangyfrifedig isaf ym Merthyr Tudful (65.8%), Rhondda Cynon Taf (67.3%) ac Sir Ddinbych (69.3%).