Korea District has 4 tehsil office. Data are based on census 2011.
| S.No | Tehsil | Geographical Area(Sqr.Km) | Population | Total | |
|---|---|---|---|---|---|
| Male Population | Female Population | ||||
| 1 | Baikunthpur | 562.21 | 101408 | 97545 | 1989953 |
| 2 | Sonhat | 354.21 | 24549 | 23925 | 48474 |
| 3 | Bachara-Pondi | – | – | – | – |
| 4 | Patna | – | – | – | – |
| 5 | Total | 2001.779 | – | – | – |