Lilian has been given to about 20,470 people in the United States since 1880. It was most common in 2007, which makes it a millennial-parent name.
Lilian ranks 560th among American girls in 2025, with 537 born that year. Its best year was 2007, when 786 babies were given the name, ranking 417th. The typical living American called Lilian is about 17 years old today. It is relatively most common in Hawaii, where it accounts for 0.10% 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.