ABOUT THIS PUBLICATION
This publication brings together statistics on international migration into and out of Australia, internal migration within Australia (including interstate and intrastate) and information on overseas-born residents of Australia.
STATUS OF DATA WITHIN THIS PUBLICATION
The status of estimated resident population (ERP) by country of birth, and the components of population change (natural increase, net interstate migration (NIM) and net overseas migration (NOM)), are referred to as either preliminary, revised or final. For further information see paragraph 9 of the Explanatory Notes.
In this publication, figures have sometimes been rounded. Rounded figures and unrounded figures should not be assumed to be accurate to the last digit shown. Where figures have been rounded, discrepancies may occur between the sums of component items and totals. Analysis featured in this publication is based on unrounded data. Calculations made on rounded data may differ to those published.
ESTIMATED RESIDENT POPULATION BY COUNTRY OF BIRTH
This issue contains final rebased Estimated Resident Population (ERP) country of birth data based on the 2011 Census of Population and Housing for the September 2006 to June 2011 period.
This release also contains revised historical ERP by country of birth from 1992 to June 2006. This process is known as 'recasting', and is a response to a methodological improvement in the Census Post Enumeration Survey. For more information on recasting, see Feature Article: Recasting 20 Years of ERP in Australian Demographic Statistics - December 2012 quarter (cat. no. 3101.0).
In addition, from 2006 the historical ERP by country of birth series has been updated based on improved imputations from the rebuild of the overseas arrivals and departures (OAD) system. In particular improvements to the quality of country of birth data of New Zealand citizens. For more information on the imputation refer to Appendix 1 of Further Improvements to Net Overseas Migration (cat.no. 3412.0.55.002).
In addition, ERP by Country of Birth by State and Territory is now available based on the 2011 Census. This data is only available for Census years.
NET OVERSEAS MIGRATION
In 2013, the Australian Bureau of Statitistics (ABS) further improved the quality and supply of final and preliminary NOM statistics. These improvements include:
For more information see Further Improvements to Net Overseas Migration (cat.no.3412.0.55.002).
REBUILD OF THE OVERSEAS ARRIVALS AND DEPARTURES SYSTEM (ROADS)
The ABS undertook a rebuild of the Overseas Arrivals and Departures (OAD) system in 2013. The primary aim was to improve the quality of OAD data, given its importance as input to a broad range of estimates, including the estimation of Net Overseas Migration and the Estimated Resident Population by country of birth, which are both featured within this publication. For more information refer to 'Fact Sheet: Rebuild of Overseas Arrivals and Departures System', which can be downloaded from the 'Downloads' tab of this release.
UPDATE OF COUNTRY CLASSIFICATION
The country classification used within this publication is based on the latest version of the Standard Australian Classification of Countries (SACC), 2011, Version 2.2. For more information and codes see the Country Classification spreadsheet in the 'Downloads' tab of this publication online.
- improving the quality of input data used in estimating NOM due to a rebuild of the OAD system;
- improvements made to preliminary NOM estimation thereby improving quarterly preliminary ERP;
- improvements to the quality of various characteristics available from the final NOM data collection, in particular country of birth data; and
- a change to the revision cycle for publishing final NOM from a six monthly to a quarterly revision cycle.