Over the past 110 years, 417 786 boys and 970 girls have been named Sean. The name Sean ranks 75th in the United States among the most common names for boys. For the first time more than ten times newborns were named Sean in 1937. The peak of popularity of the name Sean came in the 1970s and 1980s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.