Koriawas BO is the primary post office registered under PIN code 123001 in Mahendragarh, Haryana. This code sits within the Northern Postal Region, with 28 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Koriawas BO | BO | Branch Post Office |
| Krishan Nagar BO | BO | Branch Post Office |
| Dublana BO | BO | Branch Post Office |
| Kamania BO | BO | Branch Post Office |
| Bashirpur BO | BO | Branch Post Office |
| Kanwi BO | BO | Branch Post Office |
| Dhor Kalan BO | BO | Branch Post Office |
| Madhana Kalan BO | BO | Branch Post Office |
| Narnaul HO | HO | Head Post Office |
| Barkoda BO | BO | Branch Post Office |
| Dhanota BO | BO | Branch Post Office |
| Nangal Katha BO | BO | Branch Post Office |
| Karota BO | BO | Branch Post Office |
| Nizampur RS BO | BO | Branch Post Office |
| Bhushan Kalan BO | BO | Branch Post Office |
| Kultazpur BO | BO | Branch Post Office |
| Hudina BO | BO | Branch Post Office |
| Dharson BO | BO | Branch Post Office |
| Narnaul City SO | SO | Sub Post Office |
| Dochana BO | BO | Branch Post Office |
| Mandi BO | BO | Branch Post Office |
| Azamabad Mukhota BO | BO | Branch Post Office |
| Mini SecttNarnaul SO | SO | Sub Post Office |
| Hamidpur BO | BO | Branch Post Office |
| Raghunathpura BO | BO | Branch Post Office |
| Chillro BO | BO | Branch Post Office |
| Neerpur BO | BO | Branch Post Office |
| Narnaul Kty SO | SO | Sub Post Office |
