The June 2021 quarter of Provisional Regional Internal Migration Estimates, advertised for release on 28 October 2021, has been cancelled. The main data source for the estimates is Medicare address information and a much higher number of address updates have been seen in the data this quarter due to the mass vaccination program for COVID-19. This represents an improvement in the Medicare address data but it is highly likely many of the address updates do not reflect moves which happened in the June 2021 quarter. The main purpose of this release is quarterly migration and we are not able to separate the impact of these data quality improvements from migration which occurred for the period.
The impact of vaccination-related address updates is likely to continue in the September quarter. The ABS will continue to monitor the Medicare address data and assess its fitness for statistical use in future releases currently scheduled for the first half of 2022.