DemographicsLalla is approximately 6.19 square kilometres. In 2016 the population of Lalla was 87. The population is 55% male and 45% female. On average the monthly mortgage repayments in Lalla are $800 to $999. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $275 to $349.