Kayapakkam BO is the primary post office registered under PIN code 603301 in Chengalpattu, Tamil Nadu. This code sits within the Southern Postal Region, with 7 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Kayapakkam BO | BO | Branch Post Office |
| Indalur BO | BO | Branch Post Office |
| Seethapuram BO | BO | Branch Post Office |
| Irumbuli BO | BO | Branch Post Office |
| Parukkal BO | BO | Branch Post Office |
| Acharapakkam SO | SO | Sub Post Office |
| Kattugudalur BO | BO | Branch Post Office |
