The combined population of the Koreans is about 76 million (North Korea: 25 million, South Korea: 51 million). Korea is chiefly populated by a highly homogeneous ethnic group, the Koreans, who speak the Korean language. The number of foreigners living in Korea has also steadily increased since the late 20th century, particularly in South Korea, where more than 1 million foreigners reside. It was estimated in 2006 that only 26,700 of the old Chinese community now remain in South Korea. However, in recent years, immigration from mainland China has increased; 624,994 persons of Chinese nationality have immigrated to South Korea, including 443,566 of ethnic Korean descent. Small communities of ethnic Chinese and Japanese are also found in North Korea.