30653 Orok 10-99 24 0 0 87 (as of 2005) estimated by the Sakhalin Energy Investment Company Ltd. (SEIC) "Ozolinja (2002:144-145) reported the following figures according to the estimated data available in September 2000.
・ Ca.10 persons: active speakers (who actively produce folklore; with slight knowledge of Russian)
・ 16 persons:conditionally bilingual (who speak Uilta depending on the circumstances; without knowledge of folklore; with good knowledge of Russian; all aged over 50)
・ 24 persons: passive speakers (who understand with the aid of communication in Russian)." (p. 70) A Preliminary Study of Language Contacts around Uilta in Sakhalin Off <50 10-99