DemographicsLangkoop is approximately 214.38 square kilometres. In 2016 the population of Langkoop was 111. The population is 49% male and 51% female. On average the monthly mortgage repayments in Langkoop are $600 to $799. The most common weekly income bracket is $400 to $499 per week. Weekly rents in the area are on average $100 to $149.