DemographicsPortland (Vic.) is approximately 32.5 square kilometres. In 2016 the population of Portland (Vic.) was 9712. The population is 49% male and 51% female. On average the monthly mortgage repayments in Portland (Vic.) are $1000 to $1399. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $150 to $199.