Australian State and Territory Codes: Complete ISO 3166-2:AU List

Australia is divided into 6 states and 2 territories, each with an ISO 3166-2:AU code used in shipping, tax forms, government systems, and address validation. This reference covers every subdivision with its official ISO code and practical code examples.

Complete List

Code	Name	Type
AU-ACT	Australian Capital Territory	Territory
AU-NSW	New South Wales	State
AU-NT	Northern Territory	Territory
AU-QLD	Queensland	State
AU-SA	South Australia	State
AU-TAS	Tasmania	State
AU-VIC	Victoria	State
AU-WA	Western Australia	State

Australia has 6 states (NSW, QLD, SA, TAS, VIC, WA) and 2 internal territories (ACT, NT). The Australian Capital Territory contains the capital city Canberra, similar to how Washington D.C. works in the United States.

Region Codes (Short Form)

When working with forms or APIs, you often need just the region code (the part after the hyphen):

Region Code	Full ISO Code	State/Territory
ACT	AU-ACT	Australian Capital Territory
NSW	AU-NSW	New South Wales
NT	AU-NT	Northern Territory
QLD	AU-QLD	Queensland
SA	AU-SA	South Australia
TAS	AU-TAS	Tasmania
VIC	AU-VIC	Victoria
WA	AU-WA	Western Australia

Using Australian State Codes in Code

Get All Australian States


import { subdivision } from '@koshmoney/countries';
 
const states = subdivision.forCountry('AU');
// [
//   { code: 'AU-ACT', name: 'Australian Capital Territory', type: 'Territory' },
//   { code: 'AU-NSW', name: 'New South Wales', type: 'State' },
//   { code: 'AU-NT', name: 'Northern Territory', type: 'Territory' },
//   { code: 'AU-QLD', name: 'Queensland', type: 'State' },
//   { code: 'AU-SA', name: 'South Australia', type: 'State' },
//   { code: 'AU-TAS', name: 'Tasmania', type: 'State' },
//   { code: 'AU-VIC', name: 'Victoria', type: 'State' },
//   { code: 'AU-WA', name: 'Western Australia', type: 'State' },
// ]

Look Up a Specific State


import { subdivision } from '@koshmoney/countries';
 
subdivision.whereCode('AU-NSW');
// { code: 'AU-NSW', name: 'New South Wales', type: 'State', countryCode: 'AU', regionCode: 'NSW' }
 
subdivision.where('AU', 'VIC');
// { code: 'AU-VIC', name: 'Victoria', type: 'State', countryCode: 'AU', regionCode: 'VIC' }

Validate a State Code


import { subdivision } from '@koshmoney/countries';
 
subdivision.isValidCode('AU-NSW');     // true
subdivision.isValidCode('AU-XX');      // false
 
subdivision.isValidRegion('AU', 'VIC');  // true
subdivision.isValidRegion('AU', 'CA');   // false (CA is Canadian)


import { subdivision } from '@koshmoney/countries';
 
const options = subdivision.forCountry('AU').map(s => ({
  value: s.code.split('-')[1],  // 'NSW', 'VIC', etc.
  label: s.name,
}));
 
// [{ value: 'ACT', label: 'Australian Capital Territory' }, ...]

Tree-Shaking: Load Only Australian Data


// Only load AU subdivisions (~200 bytes)
import '@koshmoney/countries/subdivision/AU';
import { forCountry } from '@koshmoney/countries/subdivision';
 
const states = forCountry('AU');  // Works
const usStates = forCountry('US');  // Returns [] (not loaded)

Postal Code Validation

Australian postcodes are 4-digit numbers:


import { postalCode } from '@koshmoney/countries';
 
postalCode.isValid('AU', '2000');   // true (Sydney)
postalCode.isValid('AU', '3000');   // true (Melbourne)
postalCode.isValid('AU', '90210');  // false (US ZIP code)
 
postalCode.getFormat('AU');   // 'NNNN'
postalCode.getName('AU');     // 'Postcode'

Postcode Ranges by State

Each state uses a specific range of postcodes:

State/Territory	Postcode Range
ACT	0200-0299, 2600-2618, 2900-2920
NSW	1000-2599, 2619-2899, 2921-2999
NT	0800-0899
QLD	4000-4999, 9000-9999
SA	5000-5799
TAS	7000-7999
VIC	3000-3999, 8000-8999
WA	6000-6797

Country Data


import { country } from '@koshmoney/countries';
 
country.whereAlpha2('AU');
// { name: 'Australia', alpha2: 'AU', alpha3: 'AUS', numeric: '036' }

Subdivision API Reference — Full subdivision module API
Country Dropdown Guide — Build dropdowns with subdivisions
Australia Country Page — Full Australia reference
New Zealand Country Page — Nearby country reference
Oceania Countries — All Oceania country codes