Addilyn has been given to about 9,862 people in the United States since 1880. It was most common in 2016, which makes it a current name.
Addilyn ranks 988th among American girls in 2025, with 256 born that year. Its best year was 2016, when 1,045 babies were given the name, ranking 312th. The typical living American called Addilyn is about 9 years old today. It is relatively most common in North Dakota, where it accounts for 0.08% 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.