| Population |
1,000,000 (Williamson 1989). 100,000 Kolokuma (1991 UBS). 1,770,000 all Ijo languages. |
| Region |
Bayelsa state, Yenagoa, South Ijaw, Kolokuma-Opokuma, Ekeremor, and Sagbama LGAs; Delta state, Burutu, Warri, and Ughelli LGAs; Ondo state, Ilaje, Ese-Odo LGAs; Ekiti state, Ikole LGA. |
| Language map |
Nigeria, Map 9, reference number 396
|
| Alternate names |
Central-Western Ijo, Ijaw, Ijo, Izo, Uzo |
| Dialects |
Arogbo, Furupagha, Egbema, West Olodiama, Oporoza (Gbaranmatu), Ogulagha, Iduwini, Ikibiri, Ogboin, West Tarakiri, Kabo(Kabowei), Kumbo(Kumbowei), Mein, Operemo, Tuomo, Ogbe Ijo, Gbarain, Kolokuma-Opokuma, Ekpetiama, Apoi, Koluama, Basan (Bassan), East Olodiama, East Tarakiri, Oyiakiri, Oporomo (Oporoma), Bumo (Boma). The Ijo (Ijaw) subgroup includes 7 languages. Izon has about 30 inherently intelligible dialects. |
| Classification |
Niger-Congo, Atlantic-Congo, Ijoid, Ijo, West Ijo |
| Language use |
The Kolokuma dialect used in adult education. |
| Language development |
Taught in primary schools. Radio programs. TV. Dictionary. Grammar. Bible portions: 1912–1924. |
| Writing system |
Latin script. |