Jaclyn has been given to about 49,734 people in the United States since 1880. It was most common in 1988, which makes it a Gen X and millennial name.
Its best year was 1988, when 2,502 babies were given the name, ranking 114th. The typical living American called Jaclyn is about 39 years old today. It is relatively most common in California, where it accounts for 0.00% 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.