AGE-GROUP

Danish

aldersklasse (cohort), aldersgruppe (cohort). (various references)

Dutch

leeftijdsklasse (cohort), leeftijdsgroep (cohort). (various references)

French

classe d'âge. (various references)

German

Altersklasse (age group, agegroup), Altersgruppe (age bracket, age cohort, age group). (various references)

Greek 

ομάδα ηλικιών (cohort). (various references)

Hungarian

korosztály (class), évjárat. (various references)

Italian

classe di età (cohort). (various references)

Japanese Kanji 

ウロン酸 (ace, acre, age, age shooter, ageing, ageism, agency, agent, aging, agism, ether, someone who is overly concerned with status. Can be used enviously with reference to someone of real accomplishment., undine, uronic acid). (various references)

Japanese Katakana 

エージグループ . (various references)

Pig Latin

age-groupay.(various references)

Portuguese

classe etária (cohort). (various references)

Spanish

grupo de edad (cohort). (various references)

Swedish

åldersgrupp (age group). (various references)