For many years, Hopkins worked as a book designer for De Vinne Press.[2] In 1896, he established his own printing company, the Marion Press, in Jamaica, Queens. He named it after his daughter, Marion Day.[3] He also was an organist and choirmaster of the Grace Episcopal Church, and wrote choir music. He was an active freemason, and served as master and organist of the Jamaica Lodge.[4]
Hopkins died in Topeka, Kansas, on February 26, 1933. He went to Topeka with his wife to visit their daughter and for health reasons.[4] He was buried in Grace Episcopal Churchyard in Jamaica, Queens.