Giriak is Taluka (Tehsil) in Nalanda district of Bihar state. Giriak has 7 areas (postal offices). Giriak has a Sub Office and the PIN Code of Giriak is 803109.
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 803115 | Chorsua PIN Code | Nalanda | Giriak | Branch Office |
| 803115 | Durgapur PIN Code | Nalanda | Giriak | Branch Office |
| 803115 | Ghorsrawan PIN Code | Nalanda | Giriak | Branch Office |
| 803109 | Giriak PIN Code | Nalanda | Giriak | Sub Office |
| 803115 | Pawa PIN Code | Nalanda | Giriak | Branch Office |
| 803115 | Pawapuri PIN Code | Nalanda | Giriak | Sub Office |
| 803115 | Pyarepur PIN Code | Nalanda | Giriak | Branch Office |