DemographicsEgg Lagoon is approximately 70.14 square kilometres. In 2016 the population of Egg Lagoon was 24. The population is 61% male and 39% female. On average the monthly mortgage repayments in Egg Lagoon are $0 to $299. The most common weekly income bracket is $500 to $649 per week. Weekly rents in the area are on average $0 to $74.