Karai B.O is the primary post office registered under PIN code 631552 in Kanchipuram, Tamil Nadu. This code sits within the Southern Postal Region, with 5 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Karai B.O | BO | Branch Post Office |
| Siruvallur B.O | BO | Branch Post Office |
| Karaipettai S.O | SO | Sub Post Office |
| Parandur B.O | BO | Branch Post Office |
| Siruvakkam B.O | BO | Branch Post Office |
