PIN code 600117 belongs to Keelakattalai SO (Sub Post Office), located in Chengalpattu district, Tamil Nadu. It falls under the Southern Postal Region and is served by 2 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Keelakattalai SO | SO | Sub Post Office |
| Old Pallavaram SO | SO | Sub Post Office |
