G-NAF

Australia's trusted source of geocoded addresses

The foundation geocoded address database for Australian businesses and governments

G-NAF

PSMA’s G-NAF dataset contains all physical addresses in Australia. It is the most trusted source of foundation geocoded addresses for Australian business and government.

G-NAF is built from addresses supplied by 10 contributors including the land agencies in each state and territory of Australia. The data is then:

  • independently examined and validated
  • matched textually and spatially.

Over 30 million contributed addresses are distilled into more than 13.5 million G-NAF addresses.

More than just an address

G-NAF is a complex dataset consisting of more than 30 tables of data. For each of the 13.5+ million principal addresses, metadata enhances the usability of G-NAF. This metadata captures:

  • Principals and aliases. Sometimes a property has multiple addresses. For example, an apartment block may be listed as 5–7 Smith Road or 5 Smith Road. The G-NAF production process produces information detailing the variations that exist between the addresses that people use and official principal addresses. The address provided by the custodian is considered the principal and any other addresses are known as aliases.
  • Geocode. This is a set of longitude and latitude values to enable the location of the address to be shown on a map. A geocode facilitates further manipulations, such as calculating the distance between the address and another point, such as waterways for risk assessments or nearest delivery vehicle for job allocation. Over 95% of addresses in G-NAF (including aliases) have an address level geocode.
  • Mesh block identifier. A mesh block is the smallest geographic region used by the ABS. The application of a mesh block ID to each G-NAF address (including a quality placement indicator) facilitates linkages to relevant demographic and socio-economic data.
  • Confidence levels. Each address is given a confidence level to indicate how many contributors support it. Not all contributors are exposed to all addresses, for example, jurisdictional addresses may not cover all private estate and complex addresses. If an address is no longer supplied by any contributor, it is given a negative rating and eventually removed from the database.
  • Primary and secondary. Addresses that contain sub-addresses, for example, a block of units or townhouses, have flags to denote the primary (e.g. 10 Smith Street) and secondary (e.g. Unit 6).
  • Unique persistent identifier. Each G-NAF address is allocated a unique persistent identifier, or the G-NAF PID, which enables information across different systems, departments or organisations to be shared based on a common address.

What is this dataset used for?

G-NAF helps to answer everyday questions about location. A well-defined location is not just an address, it’s how a place is described. G-NAF is widely used to support many businesses and government with:

G-NAF has been delivering this foundation geocoded data for 10 years.

Get this dataset

Contact our experienced G-NAF Partners, who are value-added resellers helping organisations use G-NAF.

This dataset is also available under open data terms at www.data.gov.au

Find out more

Find out about accuracy and updates in our G-NAF FAQs, technical information or our blog.

Related Blogs

Location Data banner

GNAF & location data update

Overview of PSMA's May data release including updates about GNAF and other news from PSMA Australia. ...

Read More about GNAF & location data update
Experian Address Cleaning

Geocoding the Australian Business Register

To meet the ATO’s data quality objectives Experian developed and implemented an integrated solution that provided the most efficient means of returning a full and valid address, email and mobile contact data in real time....

Read More about Geocoding the Australian Business Register

PSMA Location Data Update

Overview of the February data release and forthcoming events. ...

Read More about PSMA Location Data Update
76 Kings Park Road, West Perth WA 6005
Phone: (08) 9481 1566
Level 13, 200 Queen Street, Melbourne VIC 3000
Phone: (03) 9670 1212
225 George St, Sydney NSW 2000
Phone: (07) 3308 7430
Level 15, 100 Arthur Street, North Sydney 2060
2A/175 James Ruse Drive, Rosehill NSW 2142
Phone: 1300 137 161
Level 15, 100 Miller Street, North Sydney NSW 2060
Phone: (02) 8907 7200
Level 6, 4 Riverside Quay, Southbank VIC 3006
Phone: (03) 9694 4244
Level 1, 4-12 Amsterdam Street, Richmond VIC 3121
Phone: (02) 8257 1100
Level 7, 35 Spring Street, Bondi Junction NSW 2022
Phone: (02) 8305 2100
Level 1, 414 Kent Street, Sydney NSW 2000
Phone: (02) 8436 2800
Suite 202, 10-12 Clarke Street, Crows Nest NSW 2065
Phone: (02) 9436 3820
Unit 16/1, 11 Pearl Street, Kingscliff NSW 2487
Phone: +61 (0) 2 8216 8212
Sydney | Melbourne | Perth
Phone: 1800 651 291
Level 1, 68 Waterloo Road, Macquarie Park NSW 2113
Phone: (02) 9475 3500
Suite 3, 600 Doncaster Road, Doncaster VIC 3108
Phone: (03) 9999 1888
Scroll to top