33.7% (1,020,300) reported that they could understand spoken Welsh, 25.9% (783,800) could read and 23.8% (718,300) could write Welsh.
Dywedodd 33.7% (1,020,300) y gallent ddeall Cymraeg llafar, gallai 25.9% (783,800) ddarllen yn Gymraeg a 23.8% (718,300) ysgrifennu’n Gymraeg.