DemographicsWestgrove is approximately 453.27 square kilometres. In 2016 the population of Westgrove was 3. The population is 100% male and 0% female. On average the monthly mortgage repayments in Westgrove are $0 to $299. The most common weekly income bracket is $500 to $649 per week. Weekly rents in the area are on average $0 to $74.