In Kolkata district, West Bengal, PIN code 700001 is anchored by Council House Street SO, a Sub Post Office. Mail addressed to this code is sorted through the Eastern Postal Region, across 13 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Council House Street SO | SO | Sub Post Office |
| Khengrapatti SO | SO | Sub Post Office |
| West Bengal Assembly PO | PO | Post Office |
| New Secretariat Building SO | SO | Sub Post Office |
| Reserve Bank Building SO | SO | Sub Post Office |
| Telephone Bhawan SO | SO | Sub Post Office |
| KOLKATA GPO | GPO | General Post Office |
| Customs House SO | SO | Sub Post Office |
| Lalbazar SO | SO | Sub Post Office |
| Radhabazar SO | SO | Sub Post Office |
| Treasury Building SO | SO | Sub Post Office |
| R N Mukherjee Road SO | SO | Sub Post Office |
| Writers Building SO | SO | Sub Post Office |
