DemographicsAkaroa is approximately 5.46 square kilometres. In 2016 the population of Akaroa was 132. The population is 52% male and 48% female. On average the monthly mortgage repayments in Akaroa are $1000 to $1399. The most common weekly income bracket is $150 to $299 per week. Weekly rents in the area are on average $225 to $275.