DemographicsMount Hooghly is approximately 45.79 square kilometres. In 2016 the population of Mount Hooghly was 19. The population is 40% male and 60% female. On average the monthly mortgage repayments in Mount Hooghly are $0 to $299. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $0 to $74.