Post offices and branch post offices present in Kolasib district of Mizoram state. There are 24 Post Offices located in the district. List of Pin code of all the places in Kolasib is listed below.
| Post Office | Taluk | District | PIN Code |
|---|---|---|---|
| Bairabi B.O | North Thingdawl | Kolasib | 796081 |
| Bilkhawthlir S.O | Bilkhawthlir | Kolasib | 796091 |
| Bualpui B.O | North Thingdawl | Kolasib | 796070 |
| Buhchang B.O | Bilkhawthlir | Kolasib | 796091 |
| Builum B.O | Kolasib | Kolasib | 796081 |
| Chuhvel B.O | Kolasib | Kolasib | 796081 |
| Diakkawn B.O | North Thingdawl | Kolasib | 796081 |
| Diakkawn B.O | North Thingdawl | Kolasib | 796081 |
| Diakkawn S.O | Kolasib | Kolasib | 796082 |
| Hortoki B.O | Kawnpui | Kolasib | 796070 |
| Kawnpui S.O | North Thingdawl | Kolasib | 796070 |
| Kolasib S.O | North Thingdawl | Kolasib | 796081 |
| Mualvum B.O | Kawnpui | Kolasib | 796070 |
| N.Chawnpui B.O | Vairengte | Kolasib | 796101 |
| Phainuam B.O | Vairengte | Kolasib | 796101 |
| Phaisen B.O | Bilkhawthlir | Kolasib | 796091 |
| Saihapui 'K' B.O | Kolasib | Kolasib | 796081 |
| Saikhawthlir B.O | Kolasib | Kolasib | 796081 |
| Saiphai B.O | Vairengte | Kolasib | 796101 |
| Saipum B.O | Vairengte | Kolasib | 796101 |
| Suarhliap B.O | Kolasib | Kolasib | 796081 |
| Thingdawl B.O | North Thingdawl | Kolasib | 796082 |
| Vairengte S.O | North Thingdawl | Kolasib | 796101 |
| Vengthar B.O | North Thingdawl | Kolasib | 796081 |