The Harihar Ganj S.o (rohtas) Post Office is a government office that provides postal services, including mail delivery, postage stamp sales, speed post in one day delivery and services. Mail and packages can be dropped off at a post office or designated collection box, and stamps can be purchased at the post office or online.
| Post Office | Harihar Ganj S.o (rohtas) |
| Division | Rohtas |
| Region | Patna Hq |
| Circle | Bihar |
| Taluka | Nasriganj |
| District | Rohtas |
| State | Bihar |
| Phone | 06185-222088 |
| Sub Office | Na |
| Head Office | Sasaram H.o |
| Pincode | 821310
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harihar ganj s.o (rohtas) branch pincode is 821310
harihar ganj s.o (rohtas) branch phone number is 06185-222088
harihar ganj s.o (rohtas) branch Head Office is Sasaram H.o