Postal Code 21120 - Ban Khai, Rayong, Thailand
Postal Code: 21120
Postal System Details
Postal Authority
Thailand Post
Postal System
Five-digit numeric postal code
Region Structure
Province → District (Amphoe) → Subdistrict (Tambon) → Delivery Zone
Area Information
The postal code 21120 is part of Thailand’s national five-digit postal system, managed by Thailand Post, the country’s official postal authority. Thai postal codes follow the pattern X X X X X, such as 1 0 1 X X (example only). The first two digits identify the province, while the remaining digits designate district, subdistrict, and delivery-sector routing. This code applies to Ban Khai in the Rayong province, located near latitude 12.7833 and longitude 101.3. Routing follows Province → District (Amphoe) → Subdistrict (Tambon) → Delivery Zone. Example mapping: - Province: Rayong - District: (Example: Central Amphoe Division) - Subdistrict: Ban Khai - Delivery Zone: Based on final digits This page follows routing structures publicly used by Thailand Post. Examples shown are illustrative only. For accurate delivery, ensure district and subdistrict match Ban Khai, Rayong, Thailand.
Country:
Thailand
State:
Rayong
Area:
Ban Khai
Postal Code:
21120
Latitude:
12.7833
Longitude:
101.3
Frequently Asked Questions
1. What area does 21120 represent in Thailand?
It defines the delivery area serving Ban Khai in the Rayong province.
2. How do Thai postal codes work?
They use a five-digit format representing province, district, and subdistrict routing.
3. Can 21120 verify an address in Thailand?
Yes—if district and subdistrict match Ban Khai, Rayong.
4. Which authority manages postal codes in Thailand?
Thailand Post oversees code allocation and delivery routing nationwide.