Estimates of the population who are able to speak Welsh by demography, national identity, economic activity, health, and several other characteristics from Census 2021.
Amcangyfrifon o'r boblogaeth sy'n gallu siarad Cymraeg yn ôl demograffeg, hunaniaeth genedlaethol, gweithgarwch economaidd, iechyd, a nifer o nodweddion eraill o Gyfrifiad 2021.