The ISO 3166-2 codes for Thailand describe 76 provinces (changwat). The first part of the code is the ISO 3166-1 country code TH for Thailand, the second part is two-digit-numeric (with trailing zeros). A special non-numeric code is used for Phatthaya. The purpose of this family of standards is to establish a worldwide series of short abbreviations for places, for use on package labels, containers and such. Anywhere where a short alphanumeric code can serve to clearly indicate a location in a more convenient and less ambiguous form than the full place name. US readers may wish to consider them as the equivalent of worldwide zip or postal codes. Within the Wikipedia, the codes from the country pages link to the pages for the locations they identify.

The numbers are the same as the postal code for the province, except in the number range 11-19, where one have to subtract 1 to get the postal code from the ISO code. The number codes did change significantly between the first drafts of the ISO 3166-2 standard in 1988 and the first published version of 1993, including three new provinces which were created in the meantime.

The US standard FIPS 10-4 also includes designators for the provinces which use the same style (TH-xx), but the numbers are incompatible with the ISO standard. Thus the decoding table below does not apply to the FIPS codes. In fact the draft of the ISO 3166-2 was based upon the FIPS codes.

## Decoding table

TH-10 Bangkok TH-11 Samut Prakan TH-12 Nonthaburi TH-13 Pathum Thani TH-14 Phra Nakhon Si Ayutthaya TH-15 Ang Thong TH-16 Lop Buri TH-17 Sing Buri TH-18 Chai Nat TH-19 Saraburi TH-20 Chon Buri TH-21 Rayong TH-22 Chanthaburi TH-23 Trat TH-24 Chachoengsao TH-25 Prachin Buri TH-26 Nakhon Nayok TH-27 Sa Kaeo TH-30 Nakhon Ratchasima TH-31 Buri Ram TH-32 Surin TH-33 Si Sa Ket TH-34 Ubon Ratchathani TH-35 Yasothon TH-36 Chaiyaphum TH-37 Amnat Charoen TH-39 Nong Bua Lam Phu TH-40 Khon Kaen TH-41 Udon Thani TH-42 Loei TH-43 Nong Khai TH-44 Maha Sarakham TH-45 Roi Et TH-46 Kalasin TH-47 Sakon Nakhon TH-48 Nakhon Phanom TH-49 Mukdahan TH-50 Chiang Mai TH-51 Lamphun TH-52 Lampang TH-53 Uttaradit TH-54 Phrae TH-55 Nan TH-56 Phayao TH-57 Chiang Rai TH-58 Mae Hong Son TH-60 Nakhon Sawan TH-61 Uthai Thani TH-62 Kamphaeng Phet TH-63 Tak TH-64 Sukhothai TH-65 Phitsanulok TH-66 Phichit TH-70 Ratchaburi TH-71 Kanchanaburi TH-72 Suphanburi TH-73 Nakhon Pathom TH-74 Samut Sakhon TH-75 Samut Songkhram TH-76 Phetchabun TH-76 Phetchaburi TH-77 Prachuap Khiri Khan TH-80 Nakhon Si Thammarat TH-81 Krabi TH-82 Phang Nga TH-83 Phuket TH-84 Surat Thani TH-85 Ranong TH-86 Chumpon TH-90 Songkhla TH-91 Satun TH-92 Trang TH-93 Phattalung TH-94 Pattani TH-95 Yala TH-96 Narathiwat TH-S Pattaya

## See also

- ISO 3166-2, the reference table for all country region codes.
- ISO 3166-1, the reference table for all country codes, as used for domain names on the internet.