360 (2000 ISA). Most are monolingual. Ethnic population: 1,500 (1995 SIL). Pirahã is a small group, Múra much larger.
Amazonas state: Maici and Autaces rivers.
SOV; whistle speech reported.
Latin script [Latn].
In 1960s the population dwindled to 80 due to high infant mortality, death of mothers giving birth, and disease. Modern medicine helped population growth.