28,000 (2003 SIL).
SVO; Prepositions; Noun Head Initial; Noun classes; Verbal affixation for subject, object, tense, aspect, mood and derivation; 25 consonant phonemes; 14 vowel phonemes, 7 qualities; tonal.
Adolescents prefer Swahili [swh]. Those who stay in the area often go back to Vwanji when they get older. Private domains. All ages. Positive attitudes.
Latin script [Latn].