Any changes to the population estimates between now and June are likely to be minor, but it is possible that the estimates released in June 2020 will differ slightly from those published here.
Bydd gwerth Gorffennaf i Fedi 2019 eisoes wedi bod yn destun rhywfaint o ddiwygio am i lawr, ond nid yw’r ffigur cyfatebol ar gyfer Gorffennaf i Fedi 2020 wedi cael ei ddywygio eto.