There are 8 post offices under PIN code 603301.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Acharapakkam R.S. B.O | Branch Office | Non-Delivery | Na | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Acharapakkam S.O | Sub Office | Delivery | Na | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Indalur B.O | Branch Office | Delivery | Cheyyur | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 4 | Irumbuli B.O | Branch Office | Delivery | Cheyur | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 5 | Kattugudalur B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 6 | Kayapakkam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 7 | Parukkal B.O | Branch Office | Delivery | Chengalpattu | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 8 | Seethapuram B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |