Boua languages are distributed along the middle Chari River in Moyen-Chari Prefecture and in central Guéra Prefecture. Like the Sara, they are divided into five subgroups: Boua proper, Neillim, Tounia, Koke, and Fanian or Mana. Only a few thousand people speak Boua languages, but it is believed that their ancestors preceÍÍÍÍded Sara-speaking settlers in the Chari Valley. Several centuries ago, all the Boua subgroups may have lived farther north in Guéra Prefecture. Under pressure from slave raiders along the Islamic frontier, some Boua speakers probably migrated southward. Although speakers of Boua proper submitted to neighboring slave raiders from the Bagirmi Empire, they in turn raided their Neillim neighbors to the southeast. Similarly, the Neillim attacked the Tounia to their southeast. The Tounia sought refuge among the Kaba (a Sara subgroup) on the site of the present-day city of Sarh.

Data as of December 1988