ONS - The CASA Blog Network
ONS - The CASA Blog Network Skip to content ONS report: New approach for producing population estimates by ethnic group Posted on Tuesday 5 September 2017 by helenpackwood PGRG Blog #2, September 2017 The Office for National Statistics (ONS) publishes detailed population estimates by ethnic group for areas in England and Wales following each census. However, there are currently no reliable population estimates by ethnic group available at the local authority level for the years since the 2011 census.