Names / Boy names
Cillian
Current rank
#507
and rising
All-time peak
#463
in 2024
First recorded
1995
in U.S. data
Children named
4,000
since 1995
Popularity over time
Annual U.S. children given the name · Peak #463 in 2024 · Source: Social Security Administration
Meaning & background
Little church (Irish). Stateside, it first appears in 1995. It currently ranks #507 and is still gaining ground. Its strongest year was 2024, at #463 nationally. Across all years, more than 4,000 children have been named this.