19 January 2017
South Ripley homeowner Megan Sabburg has been identified by the Ipswich Population Modeller (IPM) as Ipswich’s 200,000th resident.
Deputy Mayor Paul Tully said the IPM was developed as a world-first for local government in 2005 to estimate the city’s population figures based on wheelie bin rollouts.
“With rapid growth we needed a more up to date method of keeping track of increases so council developed the IPM to assist with planning for the future and to track population growth,” Cr Tully said.
“The IPM uniquely estimates the city’s population based on wheelie bin rollouts and consistently scores tops mark for accuracy against each census.
“After each census we also recalibrate the occupancy ratios across the city rather than rely on a city-wide average of persons per attached dwelling.
“New measurement tools have allowed us to look at the variation in occupancy ratios across Ipswich rather than rely on one city-wide average.
“This produces improved reporting of local area population and housing and better capacity to track population growth, particularly in new growth corridors.
“Analysis indicates that there are lower than average occupancy ratios in the older established suburbs and townships and higher than average occupancy ratios in rural and large lot residential areas, newer estates up to 20 years after development and some public housing areas.
“In the 10 years from 2006 to 2016 Ipswich welcomed 53,375 new residents.
“This represents an average annual growth rate of 3.5 per cent over 10 years compared to the Queensland annual average of 2 per cent.”
The Ipswich Population Modeller won a Planning Institute of Australia Queensland Division award for Excellence in Planning Practice and Administration in November 2008.