How many Koreans are there in the world?

78 million.

Pieces of information gathered on the World Factbook website, issued by the CIA, as well as on the Ministry of Foreign Affairs and Trade of South Korea website suggest there are about 78 million Koreans world-wide. South Korea population counts over 48.5 million; North Korea has a population of over 22.6 million. The number of Korean immigrants throughout the world reaches over 6.8 million ‘“ China is the top destination for Korean immigrants, with over 2.4 million of them.