DemographicsNicholls Rivulet is approximately 37.38 square kilometres. In 2016 the population of Nicholls Rivulet was 311. The population is 53% male and 47% female. On average the monthly mortgage repayments in Nicholls Rivulet are $1000 to $1399. The most common weekly income bracket is $500 to $649 per week. Weekly rents in the area are on average $225 to $275.