Karlee has been given to about 13,647 people in the United States since 1880. It was most common in 2008, which makes it a millennial-parent name.
Its best year was 2008, when 511 babies were given the name, ranking 602nd. The typical living American called Karlee is about 21 years old today. It is relatively most common in Mississippi, where it accounts for 0.03% 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.