Wales had a higher proportion of the population who associated with a UK identity (95.8%) than England (90.0%), though this proportion has fallen since 2011 (96.6%).
Nododd cyfran uwch o’r boblogaeth yng Nghymru hunaniaeth o’r DU (95.8%) nag yn Lloegr (90.0%), er bod y gyfran hon wedi gostwng ers 2011 (96.6%).