What does Sagan mean?
Sagan /sa-gan/ [2 sylls.] as a boys' name is of Slavic origin. Surname. See also Sage.
How popular is Sagan?
Sagan is a rare given name for men but a very popular last name for all people (#21335 out of 150436, Top 14%). (2000 U.S. Census)
Shown below is an analysis of the popularity of the boy name Sagan and associated names. Sage (#654 the previous year) is the only popular varying form of Sagan (outside Top 1000) appearing in the Top 1000. Forms like Sayge are uncommon. This boy name reached the apex of its popularity in 1997 (usage of 0.501%) and has become significantly less popular since (usage 0.346%, down 30.9%). Sage (#654) is the most chic boy name among these. (2014 Birth Statistics)