There are 7 post offices under PIN code 602021.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ikkadu S.O | Sub Office | Delivery | Thiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Karikalavakkam B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Kilanur B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 4 | Monnavedu B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 5 | Odikkadu B.O | Branch Office | Non-Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 6 | Perattur B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 7 | Thalakancheri B.O | Branch Office | Delivery | Na | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |