Merimbula is a town on the Merimbula Lake, located on the Far South Coast or Sapphire Coast of New South Wales, Australia. At the 2021 …Merimbula is a town on the Merimbula Lake, located on the Far South Coast or Sapphire Coast of New South Wales, Australia. At the 2021 census, the population was 3,821. The population within 10 km of the Merimbula Post office is over 18,000 people. The satellite town of Tura Beach lies within the 10 km population radius.