Jailyn has been given to about 5,886 people in the United States since 1880. It was most common in 2007, which makes it a millennial-parent name.
Its best year was 2007, when 319 babies were given the name, ranking 967th. The typical living American called Jailyn is about 19 years old today. It is relatively most common in Texas, where it accounts for 0.00% of births.
Source: US Social Security Administration, national and state name files, 2025 release. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.