The results of the 2021 Census, the official data used to measure the number of Welsh speakers, are expected to be published by March 2023.
Disgwylir i ganlyniadau Cyfrifiad 2021, y data swyddogol a ddefnyddir i fesur nifer y siaradwyr Cymraeg, gael eu cyhoeddi erbyn mis Mawrth 2023.