Over the past 110 years, 16 064 boys have been named Stefan. The name Stefan ranks 776th in the United States among the most common names for boys. For the first time more than ten times newborns were named Stefan in 1935. The peak of popularity of the name Stefan came in the 1980s and 1990s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.