There are 28 post offices under PIN code 131001.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Atlas Cycle S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 2 | Barwasni B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 3 | Bayanpur B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 4 | Bhimnagar S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 5 | Delhi Road B.O | Branch Office directly a/w Head Office | Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 6 | Fazilpur B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 7 | Ganzbazar S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 8 | Gohana Road S.O (Sonipat) | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 9 | Harsana Kalan B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 10 | Housing Board Colony S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 11 | Industrial Area Sonipat S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 12 | Kakroi B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 13 | Lehrara B.O | Branch Office directly a/w Head Office | Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 14 | Mehlana B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 15 | Model Town, Sonipat S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 16 | Mohana B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 17 | Ram Bazar-Sonipat S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 18 | Rathdhana B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 19 | Rathdhana Road Sonipat S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 20 | Rattangarh B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 21 | Rishikul Vidyapeeth B.O | Branch Office directly a/w Head Office | Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 22 | Sandal Kalan B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 23 | Shapur Turk B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 24 | Sonipat H.O | Head Office | Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 25 | Sonipat Kty S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 26 | Sonipat Mandi S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 27 | Sonipat Sector 14 S.O | Sub Office | Non-Delivery | Sonipat | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |
| 28 | Tharuoldepur B.O | Branch Office directly a/w Head Office | Delivery | Na | Sonipat | Sonepat | Ambala Hq | Haryana | Haryana |