| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Abau | 10,500 | Sepik-Ramu | Sepik | Upper Sepik | ||
| ● Iwam | 5,220 | Sepik-Ramu | Sepik | Upper Sepik | Iwam | |
| ● Iwam, Sepik | 3,610 | Sepik-Ramu | Sepik | Upper Sepik | Iwam | |
| ● Amal | 1,110 | Sepik-Ramu | Sepik | Upper Sepik | Iwam | |
| ● Wogamusin | 1,110 | Sepik-Ramu | Sepik | Upper Sepik | Wogamusin | |
| ● Chenapian | 240 | Sepik-Ramu | Sepik | Upper Sepik | Wogamusin |