Peakhurst is a suburb in Southern Sydney, or the St George Area, in the state of New South Wales, Australia 21 kilometres south-west of the Sydney central business district. Peakhurst is in the local government area of the Georges River Council. Peakhurst has a western border on Salt Pan Creek, on the Georges River. Peakhurst Heights is a separate suburb to the south, which is bordered by Boggywell Creek and Lime Kiln Bay, on the Georges River.