How Common is the First Name Cillian?
We estimate that there are 3,475 people named Cillian who are currently alive and were born in the United States. Cillian is the 1,933rd most common for men, and the 4,641st most common overall.
How Old are People Named Cillian?
The average person named Cillian is 4.82 years old.
Is Cillian a Popular Baby Name Right Now?
674 people named Cillian were born in the U.S. in 2024. It was the 463rd most popular name for boys, and the 934th most popular overall.
Cillian has never been more popular than it is right now.
Is Cillian a Boy's Name or a Girl's Name?
Cillian is almost exclusively a male name. 99.8% of people named Cillian are male.
Popularity of Cillian in England
In 2020, Cillian was the 238th most popular name for boys in England and Wales.