33.0% (1,005,000) reported that they could understand spoken Welsh, 25.2% (769,100) could read and 23.2% (706,700) could write Welsh.
Dywedodd 33.2% (1,012,900) y gallent ddeall Cymraeg llafar, gallai 25.5% (778,500) ddarllen yn Gymraeg a 23.4% (712,900) ysgrifennu’n Gymraeg.