DemographicsMerbein West is approximately 8.12 square kilometres. In 2016 the population of Merbein West was 190. The population is 53% male and 47% female. On average the monthly mortgage repayments in Merbein West are $800 to $999. The most common weekly income bracket is $800 to $999 per week. Weekly rents in the area are on average $0 to $74.