| Place | Post Code |
|---|---|
| Sagarpur, Upper Assam) | 787026 |
| Sariah Bari, Upper Assam) | 784160 |
| Sarudoloni, Upper Assam) | 787031 |
| Silanibari Patta No. 1, Upper Assam) | 787031 |
| Singra, Upper Assam) | 787023 |
| Singra Gaon, Upper Assam) | 787031 |
| Solmaria, Upper Assam) | 787023 |
| Sonari, Upper Assam) | 787031 |
| Sripur, Upper Assam) | 787031 |
| Tunijan Christian, Upper Assam) | 784160 |
| Ujani Khamti, Upper Assam) | 787031 |
| Ujani Khamtibali Gaon, Upper Assam) | 787031 |
| Ujani Miri, Upper Assam) | 787031 |
| Postal Codes in Lakhimpur | |
|---|---|
| Bihpuria | |
| Dhakuakhana | |
| Kadam | |
| Naobaicha | |
| Narayanpur | |
| North Lakhimpur | |
| Subansiri | |