| | 2009 | | Rank | Provinces | Number | % | 1 | Bangkok | 4,747,953 | 13.63 | 2 | Nakhon Ratchasima | 1,351,098 | 3.88 | 3 | Khon Kaen | 998,452 | 2.87 | 4 | Chiang Mai | 926,209 | 2.66 | 5 | Ubon Ratchathani | 860,647 | 2.47 | 6 | Samut Prakan | 829,542 | 2.38 | 7 | Nakhon Si Thammarat | 792,722 | 2.28 | 8 | Chon Buri | 774,338 | 2.22 | 9 | Udon Thani | 773,960 | 2.22 | 10 | Songkhla | 733,058 | 2.10 | | Whole Kingdom | 34,826,442 | 100 |
| | | 2010 | | Rank | Provinces | Number | % | 1 | Bangkok | 4,904,536 | 12.82 | 2 | Nakhon Ratchasima | 1,495,221 | 3.91 | 3 | Khon Kaen | 1,065,906 | 2.79 | 4 | Chiang Mai | 1,003,427 | 2.62 | 5 | Ubon Ratchathani | 969,935 | 2.54 | 6 | Nakhon Si Thammarat | 915,265 | 2.39 | 7 | Samut Prakan | 872,347 | 2.28 | 8 | Udon Thani | 867,319 | 2.27 | 9 | Songkhla | 850,784 | 2.22 | 10 | Chon Buri | 832,687 | 2.18 | | Whole Kingdom | 38,243,150 | 100 |
| | | 2011 | | Rank | Provinces | Number | % | 1 | Bangkok | 5,083,557 | 12.27 | 2 | Nakhon Ratchasima | 1,636,930 | 3.95 | 3 | Khon Kaen | 1,166,088 | 2.81 | 4 | Ubon Ratchathani | 1,075,766 | 2.60 | 5 | Chiang Mai | 1,046,766 | 2.53 | 6 | Nakhon Si Thammarat | 1,008,644 | 2.43 | 7 | Udon Thani | 989,806 | 2.39 | 8 | Samut Prakan | 910,522 | 2.20 | 9 | Songkhla | 904,926 | 2.18 | 10 | Chon Buri | 865,275 | 2.09 | | Whole Kingdom | 41,432,901 | 100 |
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