Ten provinces with most of sedan: 2009 - 2011   2009     Rank Provinces Number % 1 Bangkok 2,383,061 53.41 2 Chiang Mai 161,060 3.61 3 Chon Buri 122,838 2.75 4 Songkhla 101,133 2.27 5 Nakhon Ratchasima 95,797 2.15 6 Khon Kaen 72,910 1.63 7 Phuket 60,424 1.35 8 Nonthaburi 58,274 1.31 9 Rayong 55,593 1.25 10 Surat Thani 48,956 1.10   Whole Kingdom 4,462,231 100   2010     Rank Provinces Number % 1 Bangkok 2,574,944 52.67 2 Chiang Mai 177,423 3.63 3 Chon Buri 133,872 2.74 4 Songkhla 114,232 2.34 5 Nakhon Ratchasima 108,471 2.22 6 Khon Kaen 82,728 1.69 7 Phuket 65,176 1.33 8 Rayong 63,780 1.30 9 Nonthaburi 59,872 1.22 10 Surat Thani 56,330 1.15   Whole Kingdom 4,889,182 100   2011     Rank Provinces Number % 1 Bangkok 2,797,290 51.76 2 Chiang Mai 194,956 3.61 3 Chon Buri 147,905 2.74 4 Songkhla 132,906 2.46 5 Nakhon Ratchasima 123,636 2.29 6 Khon Kaen 95,190 1.76 7 Rayong 74,041 1.37 8 Phuket 72,221 1.34 9 Surat Thani 67,702 1.25 10 Chiang Rai 61,391 1.14   Whole Kingdom 5,404,763 100 Souce : Department of Land Transport, Ministry of Transport Compiled by : Statistical Forecasting Bureau,  National Statistical Office