Postal Code 3057 - Sumner, Victoria, Australia
Postal Code: 3057
Postal System Details
Postal Authority
Australia Post
Postal System
Four-digit numeric postal code
Region Structure
State/Territory → City/Suburb → Local Delivery Zone
Area Information
The postal code 3057 belongs to Australia’s national four-digit postal system, administered under the operational framework of Australia Post, the country’s official postal authority. Australian postcodes follow the format X X X X, such as 2 0 0 X (example only). The first digit identifies the state or territory grouping, while the remaining digits define city/suburb-level delivery routes. This postal code corresponds to Sumner in the Victoria state/territory, located near latitude -37.7725 and longitude 144.9724. Routing follows State/Territory → City/Suburb → Local Delivery Zone. Example: - State/Territory: Victoria - City/Suburb: (Example: Central Metropolitan Area) - Delivery Zone: Sumner - Sector: Based on final digits This page reflects routing practices publicly used by Australia Post. All examples are illustrative only. For accurate delivery or address confirmation, ensure the city or suburb matches Sumner, Victoria, Australia.
Country:
Australia
State:
Victoria
Area:
Sumner
Postal Code:
3057
Latitude:
-37.7725
Longitude:
144.9724
Frequently Asked Questions
1. What area does 3057 represent in Australia?
It represents the local delivery area for Sumner within the Victoria state or territory.
2. How does Australia’s postcode system work?
It uses four digits representing state/territory and local routing zones.
3. Can 3057 verify an address in Australia?
Yes—if the suburb and state/territory match Sumner, Victoria.
4. Which authority manages postcodes in Australia?
Australia Post manages postal routing and code assignments nationwide.