Australian Geocoding Coverage

Street and address-level geocoding across all Australian states and territories. Suburb, postcode, and state-code normalization with metro and regional fallback behaviour.

What is covered

Map Zena resolves Australian street addresses to geographic coordinates across all states and territories — NSW, VIC, QLD, SA, WA, TAS, ACT, and NT. Coverage draws on structured address-point datasets that provide rooftop or near-rooftop precision in built-up areas. Where address points are not available, results fall back to street interpolation, then locality centroid, then postcode centroid.

Address componentCoverage detail
House number and unitResolved from address-point data where available; interpolated on street geometry otherwise
Street and road nameNational road network coverage including named lanes, courts, and drives
Suburb / localityFull national coverage; common spelling variants and abbreviations normalised
PostcodeAll 4-digit Australian postcodes with locality-postcode disambiguation
State and territoryAll eight jurisdictions; full name and standard two-letter abbreviation both accepted
CountryReturned as AU (ISO 3166-1 alpha-2) in all responses

Australian address structure

Australian postal addresses typically follow the format unit/number street name, suburb STATE postcode. Unit and flat numbers are written as Unit 4 or in slash notation (4/12 Smith Street). Both formats are parsed correctly. State codes — NSW, VIC, QLD, SA, WA, TAS, ACT, NT — are handled whether written in full or abbreviated.

Postcodes are always four digits. Supplying postcode alongside suburb significantly improves disambiguation for common suburb names that appear in multiple states, such as Richmond (NSW, VIC, QLD, SA) and Springvale (VIC, QLD).

Metro vs regional behaviour

Major metropolitan areas — Sydney, Melbourne, Brisbane, Perth, Adelaide, Hobart, Canberra, and Darwin — typically have dense address-point coverage, producing precise coordinate results for most dwelling and commercial address queries.

Regional and rural areas vary. Many regional towns have good street-level coverage, but sparse localities and rural properties may return interpolated or locality-centroid results. Remote areas without a formal street address are generally resolved at the nearest named locality level. The response match_type field indicates the precision level of each result.

Unit and apartment parsing

Both slash notation and explicit unit prefixes are parsed. Common secondary-dwelling prefixes — Unit, Flat, Apt, Suite, Shop, Level — are normalised before matching:

Accepted unit formats
4/12 George Street, Sydney NSW 2000
Unit 4, 12 George Street, Sydney NSW 2000
Flat 3, 10 Collins Street, Melbourne VIC 3000
Shop 2/50 Queen Street, Brisbane QLD 4000

Example query patterns

GET /geocode?q=
Unit 4/25 George St, Sydney NSW 2000
12 Collins Street, Melbourne VIC 3000
45 Smith Street, Darwin NT 0800
Bondi Beach NSW 2026
3220

Common use cases

  • E-commerce checkout validation — Verify that an entered delivery address resolves to a real Australian location before confirming the order.
  • Logistics and courier routing — Convert address strings from manifests into coordinates for route planning and depot assignment across metro and regional zones.
  • Property and real estate — Geocode listing addresses for map display, catchment-area overlays, and spatial filtering by suburb or postcode.
  • KYC address verification — Confirm that a customer-supplied address resolves to a known location as part of an identity check workflow.
  • Field service dispatch — Convert job address strings to coordinates for technician routing and nearest-site assignment.

Reverse geocoding for Australian addresses

The reverse geocoding endpoint accepts a latitude/longitude pair and returns the nearest Australian address, including suburb, state, and postcode. This is useful for converting GPS coordinates from mobile apps or IoT devices into human-readable addresses. Coverage depth for reverse geocoding matches the forward geocoding index.

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