[1][6] According to Reuters the most popular episodes of Jumong attracted over 90% of Iranian audience (compared to 40% in South Korea), propelling Song Il-gook to superstar status in Iran.

[9] In April 2010, he was invited to the Blue House to dine with Heads of State, including the president of Kazakhstan, as Jumong garnered immense popularity in the central Asian country.

[10] In October 2015, Song signed an exclusive contract with management agency C-JeS Entertainment.

[12][13][14] Song and Jung became parents to fraternal triplet sons at a hospital in Seoul on 16 March 2012.

Song and his sons starred in the variety show The Return of Superman from 6 July 2014 to 7 February 2016.