Ten provinces with highest establishments in social security: 2003 - 2005
  2003  
Rank Provinces Number
1 Bangkok 125,667
2 Samut Prakan 15,455
3 Chon Buri 9,635
4 Nonthaburi 8,973
5 Chiang Mai 8,710
6 Pathum Thani 7,069
7 Songkhla 6,800
8 Nakhon Ratchasima 6,304
9 Samut Sakhon 5,596
10 Phuket 5,347
  Whole Kingdom 324,079
  2004  
Rank Provinces Number
1 Bangkok 131,934
2 Samut Prakan 16,813
3 Chon Buri 10,643
4 Nonthaburi 9,724
5 Chiang Mai 9,597
6 Pathum Thani 8,115
7 Songkhla 7,318
8 Nakhon Ratchasima 6,844
9 Samut Sakhon 6,134
10 Phuket 5,992
  Whole Kingdom 346,936
  2005  
Rank Provinces Number
1 Bangkok 135,963
2 Samut Prakan 17,805
3 Chon Buri 11,826
4 Nonthaburi 10,726
5 Chiang Mai 10,494
6 Pathum Thani 9,073
7 Songkhla 7,591
8 Nakhon Ratchasima 7,330
9 Samut Sakhon 6,659
10 Phuket 6,337
  Whole Kingdom 362,559
Source : Social Security Office, Ministry of Labour
Compiled by : Statistical Forecasting Bureau,  National Statistical Office