| population | |
| Amphoe Bang Khan | 46798 |
| Amphoe Cha-uat | 79422 |
| Amphoe Chaloem Phra Kiat | 29319 |
| Amphoe Chang Klang | 29610 |
| Amphoe Chawang | 70053 |
| Amphoe Chian Yai | 38292 |
| Amphoe Chulabhorn | 30973 |
| Amphoe Hua Sai | 61868 |
| population | |
| Amphoe Khanom | 32759 |
| Amphoe Lan Saka | 40786 |
| Amphoe Mueang Nakhon Si Thammarat | 237174 |
| Amphoe Na Bon | 23421 |
| Amphoe Nopphitam | 30648 |
| Amphoe Pak Phanang | 85487 |
| Amphoe Phipun | 30443 |
| Amphoe Phra Phrom | 44621 |
| population | |
| Amphoe Phrom Khiri | 36756 |
| Amphoe Ron Phibun | 75406 |
| Amphoe Sichon | 82010 |
| Amphoe Tha Sala | 105952 |
| Amphoe Tham Phannara | 20989 |
| Amphoe Thung Song | 144123 |
| Amphoe Thung Yai | 73555 |
 | Nakhon Si Thammarat Airport | ~ 21.33 km |
| Krabi Airport | ~ 97.54 km |
| Trang Airport | ~ 100.68 km |
| Surat Thani Airport | ~ 111.76 km |
| Samui Airport | ~ 131.30 km |
| Songkhla Airport | ~ 159.48 km |
| Phuket International Airport | ~ 168.49 km |
| Hat Yai International Airport | ~ 173.88 km |
| Ranong Airport | ~ 205.44 km |
