Defence Service Staff College S.O is the primary post office registered under PIN code 643231 in The Nilgiris, Tamil Nadu. This code sits within the Southern Postal Region, with 4 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Defence Service Staff College S.O | SO | Sub Post Office |
| Wellington S.O | SO | Sub Post Office |
| Berhatti B.O | BO | Branch Post Office |
| Wellington Bazaar S.O | SO | Sub Post Office |
