Jumong had the highest ratings of all Korean dramas in 2006 in Korea.
Broadcast rights for Jumong had been sold to 9 countries by March 2006, including Japan, Mongolia, Taiwan, Hong Kong, Vietnam, Singapore, Thailand, Malaysia, and the Philippines. It also aired in Canada, North Korea, Tanzania, Turkey, Uzbekistan, Kazakhstan, Myanmar, Iran, the UK and the US.
The actor who played Jumong, Song Il-guk, also played Jumong's grandson, Muhyul, in another television drama The Kingdom of the Winds (2008) in 2008.
MBC originally planned "Jumong" to be 60 episodes long; however, it extended the series to 81 episodes due to its overwhelming popularity.
2007 43rd Baeksang Awards: Highest Award for a TV Drama.