DemographicsWivenhoe Hill is approximately 16.53 square kilometres. In 2016 the population of Wivenhoe Hill was 9. The population is 47% male and 53% female. On average the monthly mortgage repayments in Wivenhoe Hill are $0 to $299. The most common weekly income bracket is $800 to $999 per week. Weekly rents in the area are on average $0 to $74.