Hungarian statistician; born April 20, 1844, at Pesth. He was educated privately, and then accepted a position with an insurance company, and also entered the field of journalism. In 1867 he became editor of the department of economics on the "Pesti Napló," subsequently joining the staff of the "Reform." His literary activity resulted in his appointment as director of the bureau of statistics at Budapest in 1870. He was elected member of the Royal Hungarian Academy in 1879; honorary M.D. of the University of Pennsylvania; and honorary member of the University of Klausenburg in 1896, in which year also King Francis Joseph I. elevated him to the Hungarian nobility with the prænomen "de Szántó."
Besides numerous papers in Hungarian, Körösi is the author of the following works: "Bulletin Annuel des Finances des Grandes Villes," 18 vols.; "Bulletin Hebdomadaire de Statistique Internationale," 24 vols.; "Projetd'un Recensement du Monde," Paris, 1881; "Armuth und Todesursachen," Vienna, 1886; "Kritik der Vaccinations-Statistik," Berlin, 1890; "Beiträge zur Frage des Impfschutzes," ib. 1891; "Demologische Beiträge," ib. 1892; "Plan einer Mortalitäts-Statistik für Grosstädte" (ib.); "Maass und Gesetze der Ehelichen Fruchtbarkeit," Vienna, 1894; "An Estimate of the Degree of Legitimate Natality," London, 1895; "Die Seculare Weltzählung vom Jahre 1900" (Berlin, 1897).
Körösi proposed an international movement for the uniformity of the census of 1900, and his plan was adopted by the Institut International de Statistique.
- Szinnyei, Magyar Irók Elete;
- Pallas Lex. x., xviii.;
- Meyers Konversations-Lexikon.