 Brymbo was within the county of Denbighshire until 1974, and the new county of Clwyd until 1996, when the latter was abolished.It is now within Wrexham County Borough.The first church in Brymbo was St John's, consecrated in 1838; it was closed in 1869 after it was affected by subsidence due to construction work on the Wrexham and Minera Railway.