L1 users: 360 (2007 R. Dongosaro). About 60 on the outer islands (Sonsoral 30, Pulo Anna 10, Merir 3) and 300 in Koror town, Echang village.
Sonsorol state: Merir, Pulo Anna, and Sonsorol islands.
6b (Threatened). Recognized language (1983, Constitution, Article 13(1)).
Sonsorolese, Pulo Anna, Merir. Significant linguistic differences between Tobian [tox] and Sonsorolese; similar to or greater than differences between, e.g., Puluwatese [puw] and Namonuito [nmt]. 50% intelligibility of Woleaian [woe], less with the remainder of the Trukic continuum. The Merir dialect reportedly has no remaining speakers. Lexical similarity: 69% with Ulithian [uli].
Young Sonsorolese are reported to speak their native language with many English [eng] admixtures. Consequently, their speech is very different from the Sonsorolese of the elder generation, in which there are currently less than 20 speakers over 60 years old. Most also use Palauan [pau]. Also use English [eng].
Latin script [Latn].