Sean has been given to about 426,606 people in the United States since 1880. It was most common in 1990, which makes it a Gen X and millennial name.
Sean ranks 489th among American boys in 2025, with 623 born that year. Its best year was 1990, when 12,070 babies were given the name, ranking 37th. The typical living American called Sean is about 38 years old today. It is relatively most common in District of Columbia, where it accounts for 0.11% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.