DemographicsCathcart (Vic.) is approximately 34.08 square kilometres. In 2016 the population of Cathcart (Vic.) was 91. The population is 54% male and 46% female. On average the monthly mortgage repayments in Cathcart (Vic.) are $1000 to $1399. The most common weekly income bracket is $800 to $999 per week. Weekly rents in the area are on average $100 to $149.