Postal code range for the state of Assam lies between 781001 - 788931.The list of districts and their corresponding postal code ranges in Assam are as follows:
| Districts | Postal Code Range |
|---|---|
| Barpeta | 781301-781367 |
| Bongaigaon | 783134-783394 |
| Cachar | 788001-788817 |
| Darrang | 784113-784529 |
| Dhemaji | 787026-787110 |
| Dhubri | 783127-783388 |
| Dibrugarh | 785675-786692 |
| Goalpara | 783101-783134 |
| Golaghat | 785104-785705 |
| Hailakandi | 788117-788802 |
| Jorhat | 785001-785704 |
| Kamrup | 781001-782403 |
| Karbi Anglong | 782139-782490 |
| Karimganj | 788006-788806 |
| Kokrajhar | 783127-783376 |
| Lakhimpur | 784160-787056 |
| Marigaon | 782001-782413 |
| Nagaon | 782001-785602 |
| Nalbari | 781126-781378 |
| North Cachar Hills | 788108-788931 |
| Sibsagar | 785006-785705 |
| Sonitpur | 784001-784506 |
| Tinsukia | 786125-786601 |