DemographicsWoy Woy Bay is approximately 7.71 square kilometres. In 2016 the population of Woy Woy Bay was 419. The population is 52% male and 48% female. On average the monthly mortgage repayments in Woy Woy Bay are $1800 to $2399. The most common weekly income bracket is $650 to $799 per week. Weekly rents in the area are on average $350 to $449.