whereabouts · adverb /ˌweər.əˈbaʊts/
C2 used to ask in what place or area someone or something is
Whereabouts does he live?
whereabouts · noun /ˈweə.rə.baʊts/
C2 the place where someone or something is
His whereabouts are unknown.
However, his whereabouts have been unknown for 6 years. (Certificate of Proficiency in English; C2; Spanish)