A mụrụ Scarlett Ingrid Johansson na New York City borough nke Manhattan na November 22, 1984. Nna ya, Karsten Olaf Johansson, bụ onye na-ese ihe owuwu nke sitere na Copenhagen, Denmark, na nna nna ya, Ejner Johansson, bụ onye na-ede akụkọ ihe mere eme, onye edemede na onye nduzi ihe nkiri, onye nna ya bụ onye Sweden. Nne Scarlett, Melanie Sloan, onye na-emepụta ihe, si n'ezinụlọ ndị Juu Ashkenazi si Poland na Russia. O nwere nwanne nwanyị tọrọ, Vanessa, onye bụkwa onye na-eme ihe nkiri; nwanne nwoke okenye, Adrian; na ejima nwoke, Hunter. Johansson nwekwara nwanne nwoke nke okenye, Christian, site na alụmdi na nwunye mbụ nke nna ya. Ọ na-ejide onwe ya na nwa amaala Danish. Johansson gara ụlọ akwụkwọ elementrị PS 41, ụlọ akwụkwọ na Manhattan, Greenwich. Ndị mụrụ ya gbara alụkwaghịm.
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