A database of postcodes/zipcodes and the corresponding spatial locations in terms of a latitude and a longitude (or similar coordinates in an openly published coordinate system). The data has to be available for the entire country. See our methodology section for more information.
The submitter assessed the usability of the data as follows (3 - little to no effort needed, 1 - extensive effort needed): 2
|Downloadable at once||Yes|
|Up-to-date||Yes||Dataset is updated and published quarterly|
|Available free of charge||Yes|
|In an open and machine-readable format||CSV, TSV||GNAF is provided as Pipe-seperated files that can be assembled into a relational database using supplied scripts https://www.psma.com.au/sites/default/files/g-naf_-_getting_started_guide.pdf|
|findable_steps||google search for national location data australia||The release of GNAF has been well publicised in Australia and worldwide|
|licence_url||https://data.gov.au/dataset/geocoded-national-address-f||The EULA terms are based on the Creative Commons Attribution 4.0 International license (CC BY 4.0). However, an important restriction relating to the use of the open G-NAF for the sending of mail has been added.|
|Collected by government||Yes|
|usability||2||Reference material is provided for the assembly into a relational database. A version has been provided this year in single PSV file format. http://portal.govhack.org/datasets/2016/australia/psma/gnaf-flat-file-in-psv.html|
|collector_name||PSMA Australia||PSMA Australia Limited is an unlisted public company owned by Australia’s federal, state and territory governments|
|characteristics||Zipcodes, Addresses, Coordinates (latitude, longitude), Data available for entire country||GNAF contains address, postcode and co-ordinates for every address in the country|
|location||http://data.gov.au/dataset/geocoded-national-address-fi - GNAF||G-NAF (Geocoded National Address File) is a trusted index of Australian address information. It contains the state, suburb, street, number and coordinate reference (or “geocode”) for street addresses in Australia|
GNAF is the national geocoded address file, and as such, it fulfills the requirements as it gives coordinates for all addresses including their postcodes, which is more accurate than postcode centroids or polygons. There are non-free versions of postcode boundaries (https://www.psma.com.au/products/postcode-boundaries) and centroids (https://postcode.auspost.com.au/product_display.html?id=4). The ABS also freely publishes approximations of postcode boundaries to coincide with the 5-yearly Census release http://www.abs.gov.au/ausstats/abs@.nsf/Lookup/by%20Subject/1270.0.55.003~July%202016~Main%20Features~Postal%20Areas%20(POA)~8
I thank dearly to Toby Bellwood for his attention and help with this review.