Nils J. Hong was born 7 February 1866 in Westby, Wisconsin, and the family moved to Minnesota shortly thereafter. He attended the Willmar Seminary in Minnesota off and on from 1881 to 1892, and taught public school when he was not attending classes. Hong graduated from Luther College in 1895 and returned to Willmar Seminary as an instructor.
In 1897 Hong came to Pacific Lutheran Academy as a professor, where he taught at least a dozen subjects over his many years at the institution. He took over from Bjug Harstad as president in 1898, oversaw the official accreditation of the school, and helped to start Parkland Light and Water (now the oldest operating nonprofit public utility in the US), as well as many other advancements until PLA briefly closed in 1918. During the closure, Hong took a position as an English teacher at Lincoln High School in Tacoma.
After PLA merged with Columbia College and reopened as Pacific Lutheran College, Hong returned and taught languages and literature there until his retirement in 1938. He died the following year.