Thailand Phone Number Format
Country code +66 — Complete guide to Thailand phone number formats, mobile and landline structures, and area codes.
Number Format Overview
Phone numbers in Thailand use the international country code +66. When dialing from outside Thailand, you must include this country code before the local number.
International Format
+66 [area code] [local number]
From the United States
011 66 [area code] [local number]
When dialing a number within Thailand, local dialing rules apply. You may need to include a trunk prefix (often 0) before the area code for domestic calls, but you should omit this prefix when dialing internationally.
Mobile vs. Landline Numbers
Mobile Numbers
Mobile phone numbers in Thailand typically:
- Begin with specific mobile prefixes
- May have a different length than landline numbers
- Are often 8-10 digits after the country code
+66 XX XXXX XXXX
Landline Numbers
Landline numbers in Thailand typically:
- Start with a geographic area code
- Area codes identify the city or region
- Total length varies by area code
+66 (area) XXXX XXXX
Example Phone Numbers
These are example formats only and are not real phone numbers:
| Type | Local Format | International Format | From US |
|---|---|---|---|
| Landline (Bangkok) | (0XX) XXXX XXXX |
+66 XX XXXX XXXX |
011 66 XX XXXX XXXX |
| Mobile | 0XXX XXX XXXX |
+66 XXX XXX XXXX |
011 66 XXX XXX XXXX |
| Toll-Free | 0800 XXX XXXX |
+66 800 XXX XXXX |
011 66 800 XXX XXXX |
Thailand Area Codes
Major area codes in Thailand:
| Area Code | City / Region |
|---|---|
2 |
Bangkok |
44 |
Burirum |
39 |
Chanthaburi |
53 |
Chiang Mai |
54 |
Chiang Rai |
38 |
Chon Buri |
34 |
Kanchanaburi |
54 |
Lampang |
44 |
Nakhon Ratchasima |
56 |
Nakhon Sawan |
55 |
Namphaengphet |
42 |
Nong Khai |
73 |
Pattani |
38 |
Pattaya |
55 |
Phitsanulok |
76 |
Phuket |
32 |
Ratchaburi |
36 |
Saraburi |
74 |
Songkhla |
77 |
Surat Thani |
55 |
Tak |
45 |
Ubon Ratchathani |
Dialing Tips
- Remove the leading zero: When dialing internationally, drop the trunk prefix (usually 0) that is used for domestic calls in Thailand.
- Use the + notation: From a US mobile phone, use
+66instead of011 66. - Verify the number length: Make sure you have the correct number of digits. If your call does not connect, check whether you need to add or remove an area code digit.
- Save contacts in international format: Always store phone numbers with the full
+66prefix so they work from any country.
Thailand Quick Info
| Country Code | +66 |
|---|---|
| ISO Code | TH |
| Capital | Bangkok |
| International Prefix | 011 (from US) |