DemographicsKelso (Tas.) is approximately 9.03 square kilometres. In 2016 the population of Kelso (Tas.) was 146. The population is 50% male and 50% female. On average the monthly mortgage repayments in Kelso (Tas.) 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.