There are 12 post offices under PIN code 602023.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Allikuzhi B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Devandavakkam B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Nambakkam B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 4 | Neiveli B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 5 | Nelvoy B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 6 | Odappai B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 7 | Placepalayam B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 8 | Poondi S.O | Sub Office | Delivery | Tiurvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 9 | Pullarambakkam B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 10 | Sandarayanpalayam B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 11 | Timmaboopalapuram B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 12 | Vellathukottai B.O | Branch Office | Delivery | Tiruvallur | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |