The Mid-Western Regional Council is a local government area in the Central West region of New South Wales, Australia. The area under administration is located adjacent to the Castlereagh Highway that passes through the middle of the area in an approximate southeast-northwest direction.Mid-Western Regional Council was proclaimed on 26 May 2004 and incorporates the whole of the former Mudgee Shire Council and parts of the former Merriwa and Rylstone Shires.