Kahalgoan is Taluka (Tehsil) in Bhagalpur district of Bihar state. Kahalgoan has 35 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 813222 | Akabarpur PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Amdanda PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Arar PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Baliskadma PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813222 | Barani PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Batsar PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813203 | Bhawanipur PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Bishanpur PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Chaknathu PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Channo PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Chhotonaki PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Dhankar PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Dhanora PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Dhoabai PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813222 | Ekdara PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Hasai PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813203 | Kalgigaj PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Karia PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813203 | Kasri PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813222 | Kishanduspur PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Madarganj PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Mahesakhore PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Maheshpur PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Murhan PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Nadiama PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Pair PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Pathak PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813203 | Patharghatta PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Rahmandih PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813222 | Rampur PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Sanokhar PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813205 | Sathiari PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Silhan PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Sohail PIN Code | Bhagalpur | Kahalgoan | Branch Office |
| 813204 | Srimatpur PIN Code | Bhagalpur | Kahalgoan | Branch Office |