DemographicsRetreat (NSW) is approximately 135.53 square kilometres. In 2016 the population of Retreat (NSW) was 52. The population is 57% male and 43% female. On average the monthly mortgage repayments in Retreat (NSW) are $800 to $999. The most common weekly income bracket is $650 to $799 per week. Weekly rents in the area are on average $0 to $74.