DemographicsGidley is approximately 20.9 square kilometres. In 2016 the population of Gidley was 91. The population is 56% male and 44% female. On average the monthly mortgage repayments in Gidley are $1800 to $2399. The most common weekly income bracket is $1000 to $1249 per week. Weekly rents in the area are on average $0 to $74.