| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 301 | Sarsadh 44 | Mehmoodpur BO | 📍 131301 | Gohana | Branch Post Office |
| 302 | Sehri 7-R | Sehri BO | 📍 131402 | Kharkhoda | Branch Post Office |
| 303 | Seoli 39 | Jakhauli SO | 📍 131023 | Sonipat | Post Office - PO |
| 304 | Sersa 54 | Sersa BO | 📍 131028 | Sonipat | Branch Post Office |
| 305 | Shafiabad Kherhi Mana jat 60 | Nathupur BO | 📍 131029 | Sonipat | Branch Post Office |
| 306 | Shafiabad Pana Paposhian 58 | Nathupur BO | 📍 131029 | Sonipat | Branch Post Office |
| 307 | Shahjahanpur 82 | Shapur Turk BO | 📍 131001 | Sonipat | Branch Post Office |
| 308 | Shahpur Taga 108 | Ghasauli BO | 📍 131101 | Ganaur | Branch Post Office |
| 309 | Shahpur Turak 83 | Shapur Turk BO | 📍 131001 | Sonipat | Branch Post Office |
| 310 | Shahzadpur 168 | Sandal Kalan BO | 📍 131001 | Sonipat | Branch Post Office |
| 311 | Shamashpur 135 | Khubru BO | 📍 131101 | Ganaur | Branch Post Office |
| 312 | Shamri Buran 53 | Shamri BO | 📍 131306 | Gohana | Branch Post Office |
| 313 | Shamri Lochab Barren 54 | Shamri BO | 📍 131306 | Gohana | Branch Post Office |
| 314 | Shamri Sisan 55 | Shamri BO | 📍 131306 | Gohana | Branch Post Office |
| 315 | Shatawli 155 | Sitawali BO | 📍 131024 | Sonipat | Branch Post Office |
| 316 | Sheikhupura 141 | Sheikhpura BO | 📍 131101 | Ganaur | Branch Post Office |
| 317 | Siha Khera 142 | Khubru BO | 📍 131101 | Ganaur | Branch Post Office |
| 318 | Sikanderpur Majra 64 | Sikenderpur Majra BO | 📍 131301 | Gohana | Branch Post Office |
| 319 | Silana 5-R | Silana BO | 📍 131408 | Kharkhoda | Branch Post Office |
| 320 | Sisana 26-R | Garhi Sisana ED BO | 📍 131408 | Kharkhoda | Branch Post Office |
| 321 | Siwanka 26 | Chhetra BO | 📍 131306 | Gohana | Branch Post Office |
| 322 | Sonipat | Housing Board Colony SO | 📍 131001 | Sonipat | Post Office - PO |
| 323 | Sonipat | Ram Bazar-Sonipat SO | 📍 131001 | Sonipat | Post Office - PO |
| 324 | Sonipat | Atlas Cycle SO | 📍 131001 | Sonipat | Post Office - PO |
| 325 | Sonipat | Delhi Road BO | 📍 131001 | Sonipat | Branch Post Office |
| 326 | Sonipat | Ganzbazar SO | 📍 131001 | Sonipat | Post Office - PO |
| 327 | Sonipat | Gohana Road SO Sonipat | 📍 131001 | Sonipat | Post Office - PO |
| 328 | Sonipat | Lehrara BO | 📍 131001 | Sonipat | Branch Post Office |
| 329 | Sonipat | Sonipat HO | 📍 131001 | Sonipat | Head Post Office - H |
| 330 | Sonipat | Sonipat Kty SO | 📍 131001 | Sonipat | Post Office - PO |
| 331 | Sonipat | Sonipat Mandi SO | 📍 131001 | Sonipat | Post Office - PO |
| 332 | Sonipat | Sonipat Sector - 14 SO | 📍 131001 | Sonipat | Post Office - PO |
| 333 | Sonipat | Bhimnagar SO | 📍 131001 | Sonipat | Branch Post Office |
| 334 | Sonipat | Industrial Area Sonipat SO | 📍 131001 | Sonipat | Branch Post Office |
| 335 | Sonipat | Model Town Sonipat SO | 📍 131001 | Sonipat | Branch Post Office |
| 336 | Tajpur 14 | Jainpur BO | 📍 131027 | Sonipat | Branch Post Office |
| 337 | Tajpur Tihara Khurd 191 | Tihar Bagru BO | 📍 131022 | Sonipat | Branch Post Office |
| 338 | TDI City Kundli SO | TDI City Kundli SO | 📍 131030 | Sonipat | Sub Post Office |
| 339 | Teha 107 | Bari BO | 📍 131101 | Ganaur | Branch Post Office |
| 340 | Teori 127 | Bajanakhurd BO | 📍 131102 | Ganaur | Branch Post Office |
| 341 | test | Sonipat HO | 📍 131001 | Sonipat | Head Post Office - H |
| 342 | Thana Kalan 220 | Thanakalan BO | 📍 131402 | Kharkhoda | Branch Post Office |
| 343 | Thana Khurd 221 | Thanakalan BO | 📍 131402 | Kharkhoda | Branch Post Office |
| 344 | Tharia 169 | Sandal Kalan BO | 📍 131001 | Sonipat | Branch Post Office |
| 345 | Tharu 170 | Tharuoldepur BO | 📍 131001 | Sonipat | Branch Post Office |
| 346 | Thaska 34 | Mahra-I BO | 📍 131301 | Gohana | Branch Post Office |
| 347 | Tihar 183 | Tihar BO | 📍 131301 | Gohana | Branch Post Office |
| 348 | Tikola 16 | Jainpur BO | 📍 131027 | Sonipat | Branch Post Office |
| 349 | Turakpur 224 | Nahri SO | 📍 131103 | Kharkhoda | Post Office - PO |
| 350 | Udesipur 163 | Panchijatan BO | 📍 131102 | Ganaur | Branch Post Office |