Navigating mail delivery or shipping packages to Taiwan requires understanding its unique postal numbering structure. Operated by Chunghwa Post, the Taiwan ROC ZIP code system transitioned from a legacy 3+2 format to an advanced 3+3 digit configuration. This six-digit layout significantly speeds up automated mail sorting and ensures accurate final-mile delivery across cities and townships.
The first three digits of a Taiwan postal code identify the specific administrative district, such as a city, township, or urban district. The supplementary three digits narrow the location down further, pointing directly to delivery sections, specific lane segments, large corporate bulk mail recipients, or individual residential blocks. While everyday personal mail often gets delivered successfully using just the initial three digits, businesses, logistics operators, and international e-commerce shippers rely on the full six-digit code to prevent sorting delays.
The Structure of the 3+3 Postal Code System
Taiwan's current postal layout is divided into two distinct parts separated conceptually by a hyphen or written closely together.
- The First Three Digits: These designate the major administrative tier. For instance, numbers starting with 1 represent Taipei City, where specific districts like Zhongzheng carry code 100 and Da'an carries code 106.
- The Last Three Digits: These pin down the delivery zone. They indicate specific streets, alley subsets, or assigned delivery routes handled by local postal workers.
Specialized delivery blocks also use designated ranges within the final digits. Post office box numbers typically fall between 900 and 999, while military installations use the code suffix 000. If a military unit relocates, its regional prefix updates, but the 000 suffix stays identical. Related reporting on the subject has been provided by AFAR.
How to Format an Address for Taiwan
Writing a mailing address correctly ensures that automated optical character recognition (OCR) machines at sorting facilities process items without manual intervention. Taiwan addresses follow a descending hierarchical order, starting with the largest geographic entity and ending with the recipient's name.
- Write the 6-digit postal code clearly on the first line or inside designated postal boxes.
- Add the municipality, city, or county, followed by the district, township, or rural village.
- Include the street name, section number (Sec.), lane (Ln.), alley (Aly.), and house or apartment number (No.).
- Finish with the recipient's full name or company title on the final line.
For example, a corporate address in Taipei looks like this:
106409
No. 55, Sec. 2, Jinshan S. Rd., Da-an District
Taipei City 106409
Taiwan (R.O.C.)
You can verify specific zone numbers using the official Chunghwa Post Service Location directory.
Common Mistakes to Avoid
Sending mail or setting up international shipping profiles often leads to a few repetitive errors. Avoiding these pitfalls keeps packages moving smoothly.
- Dropping the 3+3 for Business Mail: While casual letters get delivered with just the base regional code, omitting the final three digits on commercial shipments or freight can trigger manual sorting delays.
- Confusing Districts with Cities: Major metropolitan areas like New Taipei City or Taichung contain numerous distinct districts. Always check the specific district name rather than guessing based on the broader city name.
- Incorrect Line Placement: Placing the postal code anywhere other than the designated top line or initial prompt field disrupts automated scanning equipment.
Frequently Asked Questions
Is the old 3+2 postal code still accepted?
Yes. Chunghwa Post still honors legacy 3+2 codes for everyday mail, and many older digital forms or international databases haven't updated to the 3+3 format. However, updating to the 6-digit version improves processing speed.
How do I find a 6-digit postal code for a new address?
You can look up any precise location using the official Chunghwa Post Query Tool, which maintains updated mapping data for every lane and alley in the country.
Do rural townships use the same format?
Yes. Rural townships follow the exact same 3+3 logic, though their final three digits usually represent broader delivery segments assigned to local rural post offices rather than dense urban lane blocks.
What happens if I leave off the last three digits?
For standard personal letters, postal workers can usually route the item based on the street address and the first three district digits. For commercial logistics, cross-border e-commerce, and courier services, missing digits can cause routing exceptions or delays.
