33.5% (1,024,300) reported that they could understand spoken Welsh, 26.0% (795,200) could read and 23.9% (730,400) could write Welsh.
Dywedodd 33.5% (1,024,300) y gallent ddeall Cymraeg llafar, gallai 26.0% (795,200) ddarllen yn Gymraeg a 23.9% (730,400) ysgrifennu’n Gymraeg.