Kolathur B.O is the primary post office registered under PIN code 621106 in Perambalur, Tamil Nadu. This code sits within the Southern Postal Region, with 4 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Kolathur B.O | BO | Branch Post Office |
| Sathanur B.O | BO | Branch Post Office |
| Garudamangalam B.O | BO | Branch Post Office |
| Kolakkanatham S.O | SO | Sub Post Office |
