33.8% of Denbighshire's usual residents who were born in Wales were able to speak Welsh (a decrease of 3.3 percentage points from 2011)
roedd 33.8% o drigolion arferol Sir Ddinbych oedd wedi'u geni yng Nghymru yn gallu siarad Cymraeg (gostyngiad o 3.3 pwynt canran ers 2011)