McMahons Point is a harbourside suburb on the lower North Shore of Sydney, New South Wales, Australia. McMahons Point is located 3 kilometres north of the Sydney central business district, in the local government area of North Sydney Council. McMahons Point sits on the peninsula flanked by Berrys Bay to the west and Lavender Bay to th…McMahons Point is a harbourside suburb on the lower North Shore of Sydney, New South Wales, Australia. McMahons Point is located 3 kilometres north of the Sydney central business district, in the local government area of North Sydney Council. McMahons Point sits on the peninsula flanked by Berrys Bay to the west and Lavender Bay to the east. The lower tip of the peninsula is known as Blues Point, which offers expansive views of Port Jackson. The postcode is 2060.