|pre 1536||Powys Fadog|
|1536 - 31 March 1974||Denbighshire|
|1 April 1974 - 31 March 1996||Clwyd|
|from 1 April 1996,||County Borough of Wrexham|
The parish of Wrexham, and later the parish of Brymbo, formed part of the Wrexham Registrar's District.
Nonconformist Church Records
The following records have been published:
|Gyfynus Independent||Clwyd FHS Blackwell Index CD||1827-1837|
|Harwd Calvinistic Methodist||Clwyd FHS Blackwell Index CD||1829-1837|
|Harwd Calvinistic Methodist||IGI C101341||1829-1837|
Births, marriages and deaths in Brymbo 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 Brymbo, formed part of this. A workhouse was built at Croesnewydd in Wrexham. The records of the Wrexham Union are now held at Denbighshire Record Office in Ruthin.