Premium Content Subscriber only Workers in mining towns such as German Creek, May Downs, Peak Downs Mine and Moranbah are raking in the most dough in the Isaac region, while those in Hamilton Island and Hayman Island are earning the least. New Australian Bureau of Statistics data has revealed the average full-time salaries for workers across Mackay Isaac Whitsunday and Queensland by postcode. German Creek and May Downs were the richest workers in the Mackay Isaac Whitsunday region, taking home an average wage of $109,994. Peak Downs Mine and Moranbah workers were not far behind with an average wage of $105,071. Workers living in Devereux Creek and Marian were the top earners in the Mackay region alone with an average wage of $83,222.