33.4% (1,014,600) reported that they could understand spoken Welsh, 26.0% (790,600) could read and 23.8% (721,300) could write Welsh.
Dywedodd 33.4% (1,014,600) y gallent ddeall Cymraeg llafar, gallai 26.0% (790,600) ddarllen yn Gymraeg a 23.8% (721,300) ysgrifennu’n Gymraeg.