MMM 2023 classifications by Australian postcode

The Modified Monash Model 2023 groups Australian locations into seven categories, from metropolitan areas to very remote communities. This directory brings together 2,640 postcodes, with each page showing the dominant category and the recorded address split.

Find a postcode

Enter four digits to open the postcode result in our MMM lookup tool. You can also search a street address there. Keep the leading zero for Northern Territory postcodes. No account is needed to browse this directory or use the checker.

A missing postcode result means the directory has no entry for that code. Try the street address search instead. Where locality information is unavailable, the directory keeps the postcode and address split without guessing a suburb or state.

Browse the seven categories

Choose a category to browse its postcodes by state. Each category page starts with the twenty largest postcodes by recorded address count, followed by the remaining postcodes. The counts below assign each postcode once, to its dominant category.

Read the address split

MMM 2023 is assigned by ABS Mesh Block 2021. Postcode boundaries can include addresses from several Mesh Blocks and more than one MMM category. The dominant category is the one with the most recorded addresses, so it does not describe every address in a mixed postcode.

On each postcode page, the percentage beside a category is its share of recorded addresses. Percentages are rounded to whole numbers and may not add to exactly 100. The total is an address count, not a population estimate. A small share can round to zero without disappearing from the split.

Each postcode page names a main suburb and lists the suburbs recorded for its largest state. Nearby links stay within the same known state and use available centroids, with postcode numbers as a fallback. Use the address-level MMM checker for a specific workplace.

Rural programs that use MMM

Some rural health workforce programs, including the Workforce Incentive Program Doctor Stream and the HELP Debt Reduction for Rural Health Practitioners, refer to the Modified Monash Model. Each program sets its own categories, MMM edition and conditions, so check the program page before you rely on a classification.

Sources

Modified Monash Model 2023 by Mesh Block 2021, Department of Health, Disability and Ageing, CC BY 2.5 AU, via data.gov.au. G-NAF address counts and locality details via the Sessional Addresses service. G-NAF release: AUG 2026 - Geoscape G-NAF - GDA2020. Latest split refresh: 10 November 2026.