There are 12 post offices under PIN code 603306.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Arungunam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Madurantakam S.O | Sub Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Morapakkam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 4 | Murugambakkam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 5 | New Mambakkam B.O | Branch Office | Non-Delivery | Na | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 6 | Pakkam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 7 | Perumbakkam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 8 | Senguntharpettai S.O | Sub Office | Non-Delivery | Maduranthakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 9 | Thatchur B.O | Branch Office | Delivery | Na | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 10 | Unamalai B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 11 | Vanniarpettai B.O | Branch Office | Non-Delivery | Maduranthakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |
| 12 | Veeranakunnam B.O | Branch Office | Delivery | Madurantakam | Kanchipuram | Chengalpattu | Chennai Region | Tamil Nadu | Tamilnadu |