Local authorities have been invited to help in the quality assurance of provisional census estimates for the first time, scheduled to take place in February and March.
Am y tro cyntaf, mae awdurdodau lleol wedi’u gwahodd i helpu â’r broses o sicrhau ansawdd amcangyfrifon dros dro y cyfrifiad, sydd wedi’i threfnu i’w chynnal ym mis Chwefror ac ym mis Mawrth.