|pre 1536||Powys Fadog|
|1536 - 31 March 1974||Denbighshire|
|1 April 1974 - 31 March 1996||Clwyd|
|from 1 April 1996||Wrexham|
The parish of Wrexham, and later the parish of Rhosddu, formed part of the Wrexham Registrar's District.
Nonconformist Church Records
Births, marriages and deaths in Rhosddu are recorded in the GRO indexes as:
|1 Jul 1837 - 1974||Wrexham||Wrexham|| XXVII (1837-51)|
Poor Law Union
The Wrexham Union was created on 30 March 1837 and the parish of Wrexham, and later the parish of Rhosddu, formed part of this. A workhouse was built at Croesnewydd in Bersham. The records of the Wrexham Union are now held at Denbighshire Record Office in Ruthin.