Korean speakers primarily communicate using the Korean language, which is the official language of both South Korea and North Korea. The language is known for its unique writing system called Hangul, created in the 15th century to improve literacy among the population. Globally, there are approximately 80 million Korean speakers, with significant communities in countries like the United States, China, and Japan. The language has various dialects, with the Seoul dialect being the standard form used in media and education in South Korea.