A few facts about Osan
- Osan is home to about 240,000 people, among the 50 largest places in South Korea.
- It lies in Gyeonggi-do.
- It's about 47 km to Seoul, the country's largest city.
- Close by: Suwon (16 km), Pyeongtaek (18 km) and Hwaseong-si (23 km).