DemographicsPurnim is approximately 55.37 square kilometres. In 2016 the population of Purnim was 270. The population is 49% male and 51% female. On average the monthly mortgage repayments in Purnim are $1400 to $1799. The most common weekly income bracket is $500 to $649 per week. Weekly rents in the area are on average $150 to $199.