Australia Address Format Guide: State Codes, Suburbs & 4-Digit Postcodes
2026-09-19 · US Address Generator
Australian mailing addresses are streamlined and regulated by Australia Post. Whether testing e-commerce checkouts or handling international logistics, proper layout of the Suburb, state abbreviation, and 4-digit numeric postcode ensures accurate delivery.
1. Standard Australia Post Line Structure
A typical Australian address ends with a single standardized line combining Suburb, State, and Postcode:
Sarah Jenkins Suite 12, 88 Pitt Street SYDNEY NSW 2000 AUSTRALIA
2. The 8 Australian States & Territories
- NSW (New South Wales) — ZIP starts with 1xxx, 2xxx
- VIC (Victoria) — ZIP starts with 3xxx
- QLD (Queensland) — ZIP starts with 4xxx
- SA (South Australia) — ZIP starts with 5xxx
- WA (Western Australia) — ZIP starts with 6xxx
- TAS (Tasmania) — ZIP starts with 7xxx
- NT (Northern Territory) — ZIP starts with 08xx
- ACT (Australian Capital Territory) — ZIP starts with 26xx
3. The Importance of Suburbs in Australia
In Australia, the Suburb is the official locality unit. Rather than simply writing "Melbourne" or "Sydney", specifying the exact suburb (e.g. St Kilda or Parramatta) alongside the matching postcode is strictly mandatory for Australia Post sorting.
4. Contact Phone Formatting
Australia's international dial code is +61. Domestic mobile numbers begin with 04 (e.g., 0412 345 678), which formats internationally as +61 412 345 678.
To test Australian forms with realistic addresses across all 8 territories, try the Australia Address Generator.