Ten provinces with most main telephone lines: 2004 - 2006   2004     Rank Provinces Main tel. station % 1 Bangkok 3,428,942 50.45 2 Chiang Mai 211,405 3.11 3 Chon Buri 198,055 2.91 4 Nakhon Ratchasima 125,955 1.85 5 Songkhla 125,557 1.85 6 Khon Kaen 95,350 1.40 7 Nakhon Pathom 89,580 1.32 8 Phra Nakhon Si Ayutthaya 89,005 1.31 9 Chiang Rai 88,827 1.31 10 Surat Thani 84,906 1.25   Whole Kingdom 6,796,619 100   2005     Rank Provinces Main tel. station % 1 Bangkok 3,538,973 50.31 2 Chiang Mai 218,253 3.10 3 Chon Buri 209,022 2.97 4 Nakhon Ratchasima 132,824 1.89 5 Songkhla 130,964 1.86 6 Khon Kaen 99,797 1.42 7 Phra Nakhon Si Ayutthaya 93,336 1.33 8 Nakhon Pathom 93,153 1.32 9 Chiang Rai 90,753 1.29 10 Surat Thani 89,642 1.27   Whole Kingdom 7,034,662 100   2006     Rank Provinces Main tel. station % 1 Bangkok 3,537,637 50.01 2 Chiang Mai 223,181 3.16 3 Chon Buri 216,273 3.06 4 Nakhon Ratchasima 135,075 1.91 5 Songkhla 133,122 1.88 6 Khon Kaen 100,750 1.42 7 Phra Nakhon Si Ayutthaya 94,478 1.34 8 Surat Thani 93,454 1.32 9 Nakhon Pathom 92,609 1.31 10 Chiang Rai 90,444 1.28   Whole Kingdom 7,073,450 100 Souce :  Telephone Organization of Thailand, Ministry of Communications Compiled by : Statistical Forecasting Bureau,  National Statistical Office