DemographicsConnellys Marsh is approximately 0.58 square kilometres. In 2016 the population of Connellys Marsh was 40. The population is 38% male and 62% female. On average the monthly mortgage repayments in Connellys Marsh are $1400 to $1799. The most common weekly income bracket is $400 to $499 per week. Weekly rents in the area are on average $0 to $74.