20,000 (1990 M. Martens), increasing. 15,000 in the region, 5,000 outside (1990 SIL), 500 in Benggaulu.
Central Sulawesi Province, Donggala regency, South Kulawi and Pipikoro subdistricts, 32 villages. Along Lariang river and tributaries. South Sulawesi Province, North Luwu regency, Bana in enclave within the Seko Padang language area; south Pasangkayu regency, Mamuju subdistrict. Gimpu and Palolo valleys, other areas north of Palu.
Bana, Benggaulu (Bingkolu), Kantewu (Central Uma), Southern Uma (Aria), Tobaku (Dompa, Ompa, Western Uma), Tolee’ (Eastern Uma), Winatu (Northern Uma). Literature exists in Kantewu dialect, but many would prefer to read their own dialect.
Use vigorous in the Uma homeland. Kantewu is prestige dialect. Among those living outside (e.g., in Palu, Palolo, Gimpu), use is vigorous among adults. For those who move away as adults, Uma remains language of the home. For those who move away as children, half retain Uma as home language. Daily work, local administration, religious services. All ages. Positive attitudes. Also use Indonesian [ind], Ledo Kaili [lew], Seko Padang [skx], or Rampi [lje] (2000 SIL).