How Common is the First Name Lillian?
We estimate that there are 203,833 people named Lillian who are currently alive and were born in the United States. Lillian is the 135th most common for women, and the 271st most common overall.
How Old are People Named Lillian?
The average person named Lillian is 28.65 years old.
Is Lillian a Popular Baby Name Right Now?
3,966 people named Lillian were born in the U.S. in 2025. It was the 57th most popular name for girls, and the 144th most popular overall.
The popularity of Lillian peaked between 1898–1901, when it was the 10th most popular name for baby girls.
Is Lillian a Boy's Name or a Girl's Name?
Lillian is almost exclusively a female name. 99.9% of people named Lillian are female.
Popularity of Lillian in England
In 2020, Lillian was the 333rd most popular name for girls in England and Wales.