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3412.0 - Migration, Australia, 2011-12 and 2012-13 Quality Declaration 
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 18/12/2013   
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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.


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.


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.


In 2013, the Australian Bureau of Statistics (ABS) further improved the quality and supply of final and preliminary NOM statistics. These improvements include:

  • 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.

For more information see Further Improvements to Net Overseas Migration (cat. no. 3412.0.55.002).


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.


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.


For further information about these and related statistics, contact the National Information and Referral Service on 1300 135 070.

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