PIN code 637401 belongs to Koonavelampatti B.O (Branch Post Office), located in Namakkal district, Tamil Nadu. It falls under the Southern Postal Region and is served by 7 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Koonavelampatti B.O | BO | Branch Post Office |
| Kurukkapuram B.O | BO | Branch Post Office |
| Masakalipatti B.O | BO | Branch Post Office |
| Andagalur S.O | SO | Sub Post Office |
| Muthukalipatti B.O | BO | Branch Post Office |
| Chandrasekarapuram B.O | BO | Branch Post Office |
| Anaipalayam B.O | BO | Branch Post Office |
