33.6% (1,018,300) reported that they could understand spoken Welsh, 25.9% (784,200) could read and 23.7% (718,200) could write Welsh.
Dywedodd 33.6% (1,018,300) y gallent ddeall Cymraeg llafar, gallai 25.9% (784,200) ddarllen yn Gymraeg a 23.7% (718,200) ysgrifennu’n Gymraeg.