 The Act came into operation in 1920.Since then there has been no established church in Wales.Between 1996 and 2016 the number of signed-up Church in Wales members dropped from 91,247 to 45,759  or 1,5% out of a total population of 3,113,150  The number of signed-up Church in Wales members dropped further to 42,441 by 2018  or 1,4% out of the total Welsh population of 3,187,203

Catholics are served by the Ecclesiastical Province of Cardiff, which exists out of the Archdiocese of Cardiff, the Diocese of Menevia and the Diocese of Wrexham.