| Sum: | 180,190 | 52 | 7,598 | 4.22% | ||||
| Sub-Group | Ethnic-Group | Language | Country | Population | Churches | Evangelicals | Evang % | Major Religion |
| Koch (Kocch, Konch) | Koch | koch proper | India | 23,584 | 2,358 | 10% | Ethnic Religion | |
| Koch | Koch | Koch | Bangladesh | 51,662 | 52 | 5,166 | 10% | Ethnic Religion |
| Koch (Cooch Behar) | Koch | koch northeast | India | 10,969 | 55 | 0.5% | Ethnic Religion | |
| Saptari Tharu | Tharu | Tharu, Kochila | Nepal | 93,975 | 0 | 19 | 0.02% | Ethnic Religion |