At the time of Census 2021, 36,370 people who were usually resident in England and Wales reported using a second address as a holiday home in Wales for at least 30 days a year.
Ar adeg Cyfrifiad 2021, dywedodd 36,370 o bobl a oedd fel arfer yn byw yng Nghymru a Lloegr eu bod wedi defnyddio ail gyfeiriad fel cartref gwyliau yng Nghymru am o leiaf 30 diwrnod y flwyddyn.