In Thrissur district, Kerala, PIN code 680306 is anchored by Avanisseri BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 10 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Avanisseri BO | BO | Branch Post Office |
| Ollur Thaikkattussery BO | BO | Branch Post Office |
| Trikkur BO | BO | Branch Post Office |
| Perinchery BO | BO | Branch Post Office |
| Konikara BO | BO | Branch Post Office |
| Marathakkara BO | BO | Branch Post Office |
| Ollur North BO | BO | Branch Post Office |
| Ponnukkara BO | BO | Branch Post Office |
| Ollur SO | SO | Sub Post Office |
| Thalore BO | BO | Branch Post Office |
