List of cities in Thailand by population. There are 137 cities in Thailand, of which Bangkok is the largest in terms of population - 8 281 002. The total number of people in Thailand is 66 497 743 for 2026.
| # | Name, city | Population |
|---|---|---|
| 1 | Bangkok | 8 281 002 |
| 2 | Nonthaburi | 266 977 |
| 3 | Pak Kret | 166 590 |
| 4 | Hat Yai | 156 460 |
| 5 | Chiang Mai | 149 309 |
| 6 | Nakhon Ratchasima | 147 947 |
| 7 | Udon Thani | 143 325 |
| 8 | Surat Thani | 125 984 |
| 9 | Khon Kaen | 120 912 |
| 10 | Nakhon Si Thammarat | 105 831 |
| 11 | Pattaya | 104 404 |
| 12 | Nakhon Sawan | 93 349 |
| 13 | Ubon Ratchathani | 86 631 |
| 14 | Nakhon Pathom | 84 630 |
| 15 | Phitsanulok | 79 886 |
| 16 | Songkhla | 75 476 |
| 17 | Phuket | 74 425 |
| 18 | Chiang Rai | 69 342 |
| 19 | Yala | 64 985 |
| 20 | Lampang | 60 659 |