Kolathur BO is the primary post office registered under PIN code 603304 in Chengalpattu, Tamil Nadu. This code sits within the Southern Postal Region, with 6 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Kolathur BO | BO | Branch Post Office |
| Kottaikadu BO | BO | Branch Post Office |
| Vedal BO | BO | Branch Post Office |
| Kudapakkam SO | SO | Sub Post Office |
| Sembulipuram BO | BO | Branch Post Office |
| Vilambur BO | BO | Branch Post Office |
