If you want to understand why Australia's population figure moved in a given period, you need the migration components of population change — not a headline number quoted out of context. This guide explains where the Australian Bureau of Statistics (ABS) publishes overseas migration data, what net overseas migration actually measures, and how to read the components without mistaking one official series for another.
What "overseas migration" covers in population accounting
The Department of Home Affairs describes net overseas migration (NOM) as the net gain or loss of population through immigration to Australia and emigration from Australia. Two details matter for correct reading.
First, NOM is a net measure. It reflects the balance between people arriving and people departing, not the total number of arrivals. A period can show strong arrival numbers and a smaller net figure, because departures are subtracted.
Second, the population covered is broader than many readers assume. Home Affairs states that NOM includes permanent and temporary migrants, as well as New Zealand and Australian citizens. So NOM is not a count of visa grants, and it is not limited to people arriving under the permanent Migration Program.
Home Affairs also notes that migration flows bear on issues such as Australia's labour supply, national income, housing availability, cultural diversity and social cohesion. That context explains why the numbers attract attention — and why the definition you use should match the question you are asking.
Important attribution point: Home Affairs states that official estimates of NOM are compiled and published by the ABS on a quarterly basis in Australian Demographic Statistics. Home Affairs publishes visa statistics separately. If you are quoting NOM, the ABS is the source.
Where the ABS publishes overseas migration data
The ABS maintains a dedicated topic page for Overseas Migration at abs.gov.au. From the content listed on that page, the practical entry points are:
| Section on the ABS page | What it is useful for |
|---|---|
| Financial year releases | Editions by period, listed on the page for 2020-21, 2021-22, 2022-23, 2023-24, 2024-25 and 2025-26 |
| Data by region | Reading migration patterns below the national level |
| Data explorer | Working through the data interactively rather than reading a static release |
| Data integration | Links to related integrated datasets |
| Request data | Asking for data not published in standard tables |
| Understanding statistics | Explanatory material on concepts and methods |
| Citing ABS | Correct attribution when you quote a figure |
The presence of a "Request data" path is worth remembering: if a cut of the data you need is not in a published table, that is the route to explore, rather than assuming the figure does not exist.
How to read the components of population change
Population change over a period is generally understood as the combination of natural increase (births minus deaths) and overseas migration (arrivals minus departures). When you are checking a claim about "population growth", work out which component is doing the work.
A practical reading order:
- Identify the period. Confirm whether the figure is for a financial year or a calendar year. The ABS Overseas Migration releases listed on the page are organised by financial year, so a financial-year figure and a calendar-year figure are not interchangeable.
- Identify the series. Confirm whether you are looking at NOM, at arrivals or departures separately, or at visa activity. These answer different questions.
- Identify the geography. National, state or territory, and regional figures can move in different directions in the same period. Use the "Data by region" entry on the ABS page for sub-national views.
- Identify the vintage. Check you have the latest edition for that period and read any explanatory notes in the release before quoting a number.
- Identify the unit. A net figure and a gross arrivals figure are not the same thing. Quoting one while describing the other is the most common error in this area.
Interpretation traps worth avoiding
- Visa grants are not migration outcomes. Home Affairs publishes live visa statistics; the ABS publishes official NOM estimates. Both are official, but they measure different things.
- "Permanent migration" is narrower than NOM. NOM includes temporary migrants and citizens, per Home Affairs, so permanent program figures will not reconcile to NOM.
- Financial-year framing can distort comparisons. Comparing a financial-year migration figure against a calendar-year housing, labour or economic figure requires you to state the mismatch or re-align the periods.
- Regional figures need the same treatment as national ones. A regional net figure can be small or negative even in a period of strong national net migration.
- Migration is one component, not the whole story. If your question is about population change overall, natural increase belongs in the same reading.
What you should verify yourself
Because these series are updated and cover different populations, confirm the following directly with the official sources before relying on a figure:
- Which ABS release and period the figure comes from, and whether a later edition exists.
- Whether the number is net overseas migration, gross arrivals, departures, or visa activity.
- Whether it is quarterly or annual, financial or calendar year.
- The geography the figure covers.
- The definitions and method notes published alongside the release.
- If you are using the data for a decision with legal, tax, migration, lending or financial consequences, take advice from a suitably qualified professional about your own circumstances.
Next steps
- Open the ABS Overseas Migration page and select the financial year edition covering the period you need.
- Read the release's explanatory material before extracting numbers, so you know what each measure includes.
- If you need a sub-national view, use "Data by region" rather than scaling down a national figure.
- If you need something not published, use the "Request data" option on the ABS page.
- Cite the release as the source, using the "Citing ABS" guidance on the page.
- If you are looking at migration because of its effect on housing demand, Australian Today's home loan explainers are at /money/home-loans/.
General information only
This article is general information about where official Australian migration and population data is published and how to read it. It is not legal, tax, migration, credit or financial advice, and it is not a recommendation about any product or provider. Australian Today is an independent publisher; it is not a lender, broker, government body, regulator or comparison service. Figures change as the ABS and the Department of Home Affairs publish new releases and revisions, so check the linked official sources for current values before relying on them.