Aidan has been given to about 121,158 people in the United States since 1880. It was most common in 2003, which makes it a millennial-parent name.
Aidan ranks 326th among American boys in 2025, with 1,051 born that year. Its best year was 2003, when 10,296 babies were given the name, ranking 39th. The typical living American called Aidan is about 20 years old today. It is relatively most common in District of Columbia, where it accounts for 0.15% 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.