Global Sourcebook for International Data Management

                                         by Graham Rhind

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Areas of southern Thailand, near the border with Malaysia, are unstable due to the actions of Muslim militants.

For supplementary information, see links to post office home pages here External, to postal code pages here External and to other personal name and addressing issues pages here External.

Table of Contents

Thailand - Country information


Local short name form

Official name





International telephone access code


ISO 3166 country codes

Car nationality plate code


Internet country code


GRC Country Code


Thailand - Number format


(where . indicates the decimal separator and , the thousands separator)

Thailand - Date and time formats


Thailand uses the Buddhist era date system, 543 years ahead of the Gregorian calendar, so that the Gregorian year 2007 is 2550 in the Thai calendar. The format, used for both the Gregorian and the Thai date systems, is:


The 24-hour clock notation is usually used in written Thai.

Thailand - Languages


Language maps External

The official language is Thai External, spoken by 20-25 000 000 people. 75 other languages are spoken. The most widespread of these are: Min Nan Chinese External (1 081 920 speakers); Northern Khmer External (1 000 000 speakers); Pattani Malay External (2 384 000 speakers); Northeastern Tai (15-23 000 000 speakers); Northern Tai (6 000 000 speakers) and Southern Tai (5 000 000 speakers).

Thailand - Personal names


Family names have only been in use in Thailand since 1915, and most people are normally known as, and addressed by, their given name. The name is usually written in the order:

   given name[ ]surname

Women typically take their husband's surname upon marriage.

Tables of names can be acquired: given names External, surnames/family names External, family name prefixes External, forms of address External, job titles External

Thailand - For the attention of


This is written Rean or Tung. The latter is not used in a formal letter.

Thailand - Company legal forms


When company names are written in English, a common company legal form is PCL (Public Company Limited). Thai legal forms include:

   บริษัทมหาชนจำกัด/ บริษัท
   บริษัทเอกชนจำกัด/ บริษัท
   ห้างหุ้นส่วนจำกัด/ ห้างหุ้นส่วน/ จำกัด
   ห้างหุ้นส่วนสามัญนิติบุคคล/ ห้างหุ้นส่วน

Comprehensive tables of these strings can be acquired – see External

Thailand - Address format


Addresses should be formatted:

   {Building/block information}
   number[ ]Thoroughfare
   {Village and district names}
   postal code

For example:


The postal code may also be written immediately following the province name.

Addresses are often based on the Thai sub-divisions and are numbered. Provinces (Changwat) are broken down into districts (Khet and Amphoe), broken down into sub-districts (Tambon), broken down into villages (Moo Ban, Ban or Muang) broken down into neighbourhoods (Moo). A soi is a side street branching off of a main street (thanon). They are numbered and include the name of the main street:

   Soi Sukhumvit 4

meaning the 4th side street along Sukhumvit thoroughfare. One side of the street contains even numbered soi, the other side odd numbered. If streets are added, for example between sois 7 and 9 it will become soi 7/1. Buildings are numbered in the same way

Trok is an alley.

In urban areas, street addresses may include more than one street line. In this example:

   14 Soi Ari Samphan
   Phahol Yothin 5

Means house number 14 on Ari Samphan lane, which branches off of the 5th side street off Phahol Yothin road.

A table containing information about the relevant position of elements within address blocks can be acquired External

Thailand - Post office box


This is written tupo nor.

Thailand - Postal codes


Postal codes consist of a block of 5 digits, commencing with a number between 1 and 9. The first two digits of the postal code indicate the province, the last three the post office. A postal code ending in ‘000’ indicates an “important” centre, postal codes ending in ‘0’ indicates a delivery office.

There are currently no codes commencing: 19, 28-29, 59, 68-69, 78-79, 87-89, 97-99.

Metadata containing postal code formatting rules, exceptions and regular expressions can be acquired External

Thailand - Postal code format graphic


Thailand - Postal code format

Thailand - Postal code specifics

Thailand - Postal code regular expression


Thailand - Postal code level of coverage


Thailand - Postal code map


Map above excludes new province of Bueng Kan.

Place names in Thailand


Refer to Exonyms in Thailand for full lists of place names in Thailand in other languages.

Alternate place name forms/postal code tables can be acquired at External

Other language place name data can be acquired at External

Thailand - Administrative districts


Administrative districts graphic

Telephone numbers in Thailand


Thai area codes have 2 digits when called from abroad. Fixed line subscriber numbers have 6 digits, mobile subscriber numbers have 7 digits. Mobile numbers have the area codes 80-99.

Tables of telephone number information/formats can be acquired – see External

Every effort is made to keep this resource updated. If you find any errors, or have any questions or requests, please don't hesitate to contact the author.

All information copyright Graham Rhind 2019. Any information used should be acknowledged and referenced.