There are 16 post offices under PIN code 601201.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Arambakkam B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Devampattu B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Edoor B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 4 | Elavur B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 5 | Gummidipundi S.O | Sub Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 6 | Iguvarpalayam B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 7 | Kallur B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 8 | Mangavaram B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 9 | New Gummidipundi B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 10 | Periaobulapuam B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 11 | Podiyarankulam B.O | Branch Office | Delivery | Gummidpundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 12 | Siddharajakandigai B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 13 | Sirupulalpettai B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 14 | Spicto Industrial Estate S.O | Sub Office | Non-Delivery | Gummidipoondi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 15 | Sunnambukulam B.O | Branch Office | Delivery | Gummidipundi | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |
| 16 | Tervali B.O | Branch Office | Delivery | Gummidipundii | Tiruvallur | Tambaram | Chennai Region | Tamil Nadu | Tamilnadu |