| Sum: | 16,270,750 | 211 | 30,000 | 0.18% | ||||
| Sub-Group | Ethnic-Group | Language | Country | Population | Churches | Evangelicals | Evang % | Major Religion |
| Isaan (Northeastern Thai) | Isaan | Thai, Northeastern | Thailand | 16,262,880 | 211 | 30,000 | 0.18% | Buddhism |
| Lao Isan | Isaan | Thai, Northeastern | Laos | 7,870 | 0 | 0 | 0% | Ethnic Religion |