This is a list of the provinces of Thailand in order of their total population. The data are from the National Statistical Office of Thailand, based upon the national census (final data) of 2000.

See also:

{| border=1 cellpadding=2 cellspacing=0 !bgcolor="#efefef"|Pos |bgcolor="#efefef"|Province |bgcolor="#efefef"|Population |- || 1|| Bangkok ||align=right| 6,355,144 |- || 2|| Nakhon Ratchasima ||align=right| 2,556,260 |- || 3|| Khon Kaen ||align=right| 1,733,434 |- || 4|| Ubon Ratchathani ||align=right| 1,691,441 |- || 5|| Nakhon Si Thammarat ||align=right| 1,519,811 |- || 6|| Chiang Mai ||align=right| 1,500,127 |- || 7|| Buri Ram ||align=right| 1,493,359 |- || 8|| Udon Thani ||align=right| 1,467,158 |- || 9|| Si Sa Ket ||align=right| 1,405,500 |- ||10|| Surin ||align=right| 1,327,901 |- ||11|| Roi Et ||align=right| 1,256,458 |- ||12|| Songkhla ||align=right| 1,255,662 |- ||13|| Chiang Rai ||align=right| 1,129,701 |- ||14|| Chaiyaphum ||align=right| 1,095,360 |- ||15|| Nakhon Sawan ||align=right| 1,090,379 |- ||16|| Chon Buri ||align=right| 1,040,865 |- ||17|| Sakon Nakhon ||align=right| 1,040,766 |- ||18|| Samut Prakan ||align=right| 1,028,401 |- ||19|| Phetchabun ||align=right| 965,784 |- ||20|| Maha Sarakham ||align=right| 947,313 |- ||21|| Kalasin ||align=right| 921,366 |- ||22|| Nong Khai ||align=right| 883,704 |- ||23|| Surat Thani ||align=right| 869,410 |- ||24|| Suphanburi ||align=right| 855,949 |- ||25|| Nonthaburi ||align=right| 816,614 |- ||26|| Nakhon Pathom ||align=right| 815,122 |- ||27|| Phitsanulok ||align=right| 792,678 |- ||28|| Ratchaburi ||align=right| 791,217 |- ||29|| Lampang ||align=right| 782,152 |- ||30|| Lop Buri ||align=right| 745,506 |- ||31|| Kanchanaburi ||align=right| 734,394 |- ||32|| Ayutthaya ||align=right| 727,277 |- ||33|| Nakhon Phanom ||align=right| 684,444 |- ||34|| Pathum Thani ||align=right| 677,649 |- ||35|| Kamphaeng Phet ||align=right| 674,027 |- ||36|| Narathiwat ||align=right| 662,350 |- ||37|| Chachoengsao ||align=right| 635,153 |- ||38|| Loei ||align=right| 607,083 |- ||39|| Pattani ||align=right| 595,985 |- ||40|| Trang ||align=right| 595,110 |- ||41|| Sukhothai ||align=right| 593,264 |- ||42|| Saraburi ||align=right| 575,053 |- ||43|| Phichit ||align=right| 572,989 |- ||44|| Yasothon ||align=right| 561,430 |- ||45|| Rayong ||align=right| 522,133 |- ||46|| Phayao ||align=right| 502,780 |- ||47|| Phattalung ||align=right| 498,471 |- ||48|| Phrae ||align=right| 492,561 |- ||49|| Tak ||align=right| 486,146 |- ||50|| Sa Kaeo ||align=right| 485,632 |- ||51|| Nong Bua Lam Phu ||align=right| 482,207 |- ||52|| Chanthaburi ||align=right| 480,064 |- ||53|| Samut Sakhon ||align=right| 466,281 |- ||54|| Uttaradit ||align=right| 464,474 |- ||55|| Nan ||align=right| 458,041 |- ||56|| Prachuap Khiri Khan ||align=right| 449,467 |- ||57|| Chumpon ||align=right| 446,206 |- ||58|| Phetchaburi ||align=right| 435,377 |- ||59|| Yala ||align=right| 415,537 |- ||60|| Lamphun ||align=right| 413,299 |- ||61|| Prachin Buri ||align=right| 406,732 |- ||62|| Chai Nat ||align=right| 359,829 |- ||63|| Amnat Charoen ||align=right| 359,360 |- ||64|| Krabi ||align=right| 336,210 |- ||65|| Mukdahan ||align=right| 310,718 |- ||66|| Uthai Thani ||align=right| 304,122 |- ||67|| Ang Thong ||align=right| 269,419 |- ||68|| Phuket ||align=right| 249,446 |- ||69|| Satun ||align=right| 247,875 |- ||70|| Nakhon Nayok ||align=right| 241,081 |- ||71|| Phang Nga ||align=right| 234,188 |- ||72|| Sing Buri ||align=right| 232,766 |- ||73|| Trat ||align=right| 219,345 |- ||74|| Mae Hong Son ||align=right| 210,537 |- ||75|| Samut Songkhram ||align=right| 204,177 |- ||76|| Ranong ||align=right| 161,210 |}