Cillian
Recorded for both sexesGen Alpha2025 rank
#507
down −44 places
2025 births
595
down −73 births
All-time births
4,084
15% of them in 2025
More common than
95%
of all archived spellings recorded for boys, by lifetime births for that sex
- Peak year
- 2024
- 668 births
- Best rank
- #463
- in 2024
- First recorded
- 1995
- #9,095 that year
- Last recorded
- 2025
- still in the data
- Average birth year
- 2020
- weighted by recorded births
- Years recorded
- 25 of 146
- with gaps
Top five years
- 2024668#463Peak
- 2025595#507
- 2023477#594
- 2022353#736
- 2021341#747
Rank over time
Inverted scale — nearer the top is more popular. Unrecorded years are left blank, not drawn as zero.
Best rank #463 in 2024 · peak births 668 in 2024
Boys and girls
Births per year for each sex, on one shared scale. The girls' series is dashed.
● 100% boys■ 0% girls
4,084 boys · 6 girls, all time
Births by decade
Where the name's whole run sits, with the best and worst rank it held in each decade
Trajectory by decade
Where Cillian has ranked, decade by decade
The band spans each decade's best and worst rank; the line follows its best.