This guide provides a comprehensive overview of Thailand address formatting, postal code structures, and localization practices. It includes information on postal services, languages, time zones, and address validation standards across Thailand.
Address Format
Structure for standardized Thailand postal addresses.
- Organization
- SubPremises SubPremisesLevel
- Building
- PremisesNumber Thoroughfare DependentLocality
- PostBoxType PostBoxNumber
- Locality AdministrativeArea
- PostalCode
- Country
Address Verification Data
Thailand postal addresses verification data.
| Available: | Yes |
| Does the country use Postal Codes: | Yes |
| PO Box Indicator: |
ตู้ไปรษณีย์, Private Bag, PO Box, Postal Restante |
| ISO-2-Code: | TH |
| ISO-3-Code: | THA |
| Phonecode: | 66 |
Address Example
Example of standardized Thailand postal addresses.

Country Info
Full Country Name: Kingdom of Thailand
| Country Alpha-2 code | TH |
|---|---|
| Country Alpha-3 code | THA |
| Numeric Code | 764 |
Timezone
Thailand Time Zone Details
| Time Zone | UTC | DST |
|---|---|---|
|
Indochina Time |
UTC+7 | UTC+7 |
Official Language
Thai is the official language. Regional languages and dialects are spoken throughout the country. English is widely taught as a second language.
Fun Fact
- The total area of Thailand is about 513,120 sq km / 198,120 sq miles. (CIA World Factbook)
- Thailand has a coastline of approximately 3,219 km / 2,000 miles, along the Gulf of Thailand and the Andaman Sea. (CIA World Factbook)
- Thailand has never been formally colonized, and became a constitutional monarchy in 1932. (CIA World Factbook)
- Natural hazards include flooding, droughts, landslides, and occasional earthquakes, especially during monsoon seasons. (CIA World Factbook)
- Life expectancy averages around 77–78 years, with steady healthcare improvements. (CIA World Factbook)
- The population is aging gradually, with declining birth rates. (CIA World Factbook)
- The terrain is diverse, with central plains, mountains in the north, and tropical coastlines in the south. (CIA World Factbook)
- elevations along the border regions. (CIA World Factbook)
Postal Code Format
In Thailand, postal codes consist of 5 digits formatted as NNNNN. The code appears after the district, city/province name. Thai addresses are written with house number, street name, sub-district (tambon), district (amphoe), province (changwat), and postal code.
Example: 123 ถนนสุขุมวิท แขวงคลองเตย เขตคลองเตย กรุงเทพมหานคร 10110 (123 Sukhumvit Road, Khlong Toei, Khlong Toei, Bangkok 10110)
Name Conventions
Population Names
In Thailand, names follow a unique system with given name preceding family name but holding more importance than the surname. Nicknames are also prevalent and used more often.
[opt: title] [given name] [FAMILY NAME] [opt: nickname]
Examples:
- นาย สมชาย วงศ์สวัสดิ์ (Mr. Somchai Wongsawat)
- นางสาว สุภาพร ศรีสุข (Miss Supaporn Srisuk)
- ดร. อนุชา ทองดี (Dr. Anucha Thongdee)
- พิมพ์ใจ รัตนสิน (Pimjai Rattanasin)
- Khun Bank
- Ajarn Somchai and Khun Siriporn
- Khun Somchai Sukhumvit and Khun Siriporn Chaiyawat
Thai names are written in Thai script (read in Wetern order left to right) and romanized for international use. Romanization systems vary, leading to different spellings of the same name.
Common honorific titles include นาย (Nai/Mr.), นาง (Nang/Mrs.), นางสาว (Nang Sao/Miss) and Khun (คุณ) which is gender neutral, and professional titles like ดร. (Dr.), ศาสตราจารย์ (Professor) and Ajarn (อาจารย์) teacher.
Thai family names (surnames) were introduced in 1913 by law. Before this, Thais used only given names.
Thai family names are typically long and unique, often created to be distinct by law. Each family name must be different from existing ones.
Most Thais use nicknames (ชื่อเล่น, chue len) in daily life rather than their official given names. These nicknames are often one syllable and may be unrelated to the official name.
Thai women retain their maiden names after marriage, though legally they may adopt their husband's surname.
Many Thai names have auspicious meanings related to virtues, prosperity, or natural elements.
The Royal Thai Family and nobility have distinct naming conventions, often including royal titles and without surnames.
Organizational Names:
Thai businesses must register with the Department of Business Development. Common legal entity designations include:
บริษัท จำกัด (มหาชน) or PCL (Public Company Limited)
บริษัท จำกัด or Co., Ltd. (Private Company Limited)
ห้างหุ้นส่วนจำกัด or LP (Limited Partnership)
ห้างหุ้นส่วนสามัญ or Partnership
วิสาหกิจชุมชน (Community Enterprise)
Company names must be in Thai, though an English name may also be registered. Names must be unique and not offensive. The legal designation typically appears at the end of the company name in both Thai and English.