Areas of Nakhon Si Thammarat
- Amphoe Bang Khan (1)
- Amphoe Cha-uat (5)
- Amphoe Chaloem Phra Kiat (2)
- Amphoe Chang Klang (1)
- Amphoe Chawang (2)
- Amphoe Chian Yai (2)
- Amphoe Chulabhorn (5)
- Amphoe Hua Sai (3)
- Amphoe Lan Saka (2)
- Amphoe Mueang Nakhon Si Thammarat (8)
- Amphoe Pak Phanang (2)
- Amphoe Tha Sala (3)
- Amphoe Thung Song (19)
- Amphoe Thung Yai (5)
Cities of Nakhon Si Thammarat
The number in parentheses indicates the number of routes.