DemographicsWivenhoe is approximately 1.49 square kilometres. In 2016 the population of Wivenhoe was 220. The population is 46% male and 54% female. On average the monthly mortgage repayments in Wivenhoe are $800 to $999. The most common weekly income bracket is $300 to $399 per week. Weekly rents in the area are on average $150 to $199.