| Name of the Region | Name of the Offices | No of Postal Colony |
| Kolkata Region | 1.SB Road Officers quarter | 1 |
| 2.Diamond Harbour | 1 | |
| 3.Baruipur | 1 | |
| 4.Krishnanagar | 1 | |
| 5.RN Tagore Road | 1 | |
| 6.Suri Anandapur | 1 | |
| 7.Bhubanganga Bolpur | 1 | |
| 8.Sainthia | 1 | |
| 9.Kalyani | 1 | |
| 10.Madhupur | 1 | |
| 11.Khagra | 1 | |
| 12.Raghunathganj | 1 | |
| 13.Kandi | 1 | |
| 14.Kashimbazar | 1 | |
| Total | 14 | |
| HQ Region | 1.Slvedapur | 1 |
| 2.Dilthaman | 1 | |
| 3.Middle point | 1 | |
| 4.Ultadanga | 1 | |
| 5.Salt Lake | 1 | |
| 6.35 Exchange /Manicktala | 1 | |
| 7.56 Exchange Cossipore | 1 | |
| 8.57 Exchange Dum Dum | 1 | |
| Total | 8 | |
| North Bengal Region | 1.Siliguri | 1 |
| 2.Malda | 1 | |
| 3.Balurghat | 1 | |
| 4.Jalpaiguri | 1 | |
| 5.Coochbehar | 1 | |
| 6.Darjeeling | 1 | |
| 7.Malbazar | 1 | |
| 8.Raiganj | 1 | |
| 9.Rajbhawan | 1 | |
| Total | 9 | |
| South Bengal Region | 1.Asansol | 4 |
| 2.Burdwan | 1 | |
| 3.Haldia | 1 | |
| 4.Midnapur | 2 | |
| 5.North Hooghly | 2 | |
| 6.Purulia | 3 | |
| 7.Tamluk | 1 | |
| Total | 14 |