There are 6 post offices under PIN code 631004.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ekhunagar S.O | Sub Office | Delivery | Arakonam | Vellore | Arakkonam | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Kavanur B.O | Branch Office | Delivery | Arakkonam | Vellore | Arakkonam | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Kilkuppam B.O | Branch Office | Delivery | Arakkonam | Vellore | Arakkonam | Chennai Region | Tamil Nadu | Tamilnadu |
| 4 | Mosur B.O | Branch Office | Delivery | Arakkonam | Vellore | Arakkonam | Chennai Region | Tamil Nadu | Tamilnadu |
| 5 | Puliyamangalam B.O | Branch Office | Delivery | Arakkonam | Vellore | Arakkonam | Chennai Region | Tamil Nadu | Tamilnadu |
| 6 | Seyyoor B.O | Branch Office | Delivery | Arakkonam | Vellore | Arakkonam | Chennai Region | Tamil Nadu | Tamilnadu |