# aiwan 3+3 Postal Code — Find Taiwan Postal Codes

> Find Taiwan Postal Codes (iPhone/iPad app by Chengchung Chiu.)

- Source: https://appshunter.io/ios/app/aiwan-3-plus-3-postal-code/id1524433635 (this page in markdown: same URL + `.md`)
- Developer: [Chengchung Chiu](https://appshunter.io/developer/1359094944)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 28 MB
- Languages: American English
- Released: 2020-07-21
- Data updated: 2026-08-02
- User reviews in markdown: https://appshunter.io/ios/app/aiwan-3-plus-3-postal-code/id1524433635/reviews.md

## What is aiwan 3+3 Postal Code?

To improve mail processing and delivery efficiency, Chunghwa Post introduced Taiwan’s 3+3 postal code system.
The 3+3 postal code contains six digits. The first three digits represent the administrative area, while the last three digits provide a more detailed delivery section code.
This more precise postal code system helps improve mail sorting efficiency and delivery accuracy.
 It helps you quickly find the correct six-digit postal code for sending letters, parcels, completing online forms, or managing address information.

Main features:
• Search Taiwan 3+3 postal codes
• Search by city, district, road, or address
• Find the complete six-digit postal code
• Simple and easy-to-use interface

Quickly find the correct postal code whenever you need to send mail or enter a Taiwan address.


## Version history (last 3 releases)

### 2.9.31 — 2026-08-01

update data.

### 1.0.2 — 2023-02-15

update database.

### 1.0 — 2020-07-21

No release notes.

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## More apps by Chengchung Chiu

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All apps by Chengchung Chiu: https://appshunter.io/developer/1359094944

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-02.*