Kayli has been given to about 7,134 people in the United States since 1880. It was most common in 2003, which makes it a millennial-parent name.
Its best year was 2003, when 333 babies were given the name, ranking 751st. The typical living American called Kayli is about 24 years old today. It is relatively most common in Florida, 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.