Ten provinces with most offender for the narcotics: 2004 - 2006   2004   Rank Provinces case 1 Bangkok 23,403 2 Chon Buri 5,878 3 Chiang Rai 3,624 4 Samut Prakan 3,103 5 Chiang Mai 1,809 6 Tak 1,749 7 Pathum Thani 1,497 8 Nonthaburi 1,374 9 Songkhla 1,347 10 Narathiwat 1,216   whole kingdom 78,472   2005   Rank Provinces case 1 Bangkok 29,267 2 Chon Buri 7,887 3 Samut Prakan 5,139 4 Chiang Rai 5,031 5 Chiang Mai 2,559 6 Nonthaburi 2,065 7 Pathum Thani 2,061 8 Nakhon Pathom 1,907 9 Phra Nakhon Si Ayutthaya 1,820 10 Kanchana Buri 1,811   whole kingdom 105,317   2006   Rank Provinces case 1 Bangkok 30,503 2 Chon Buri 9,606 3 Samut Prakan 5,299 4 Chiang Rai 3,493 5 Chiang Mai 3,191 6 Nakhon Pathom 2,844 7 Pathum Thani 2,463 8 Kanchana Buri 2,313 9 Songkhla 2,300 10 Nonthaburi 2,142   whole kingdom 117,003 Souce : The Royal Thai Police Compiled by : Statistical Forecasting Bureau,  National Statistical Office