Cilla vs Cillian

Side-by-side comparison of Cilla and Cillian — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Cilla

Girl name

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Name B

Cillian

Boy name · Rank #463

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Which name is more popular?

Metric Cilla Cillian
Current Rank Unranked #463
Total Births (all years) 37 3,486
Peak Year 1907 2024
Peak Year Births 7 668
Peak Decade 1940ss 2020ss
Gender Girl Boy
First Recorded Year 1882 1995

Births by Decade

Decade Cilla Cillian
1880ss 5 —
1900ss 7 —
1910ss 5 —
1920ss 5 —
1940ss 10 —
1990ss — 10
2000ss 5 208
2010ss — 1,204
2020ss — 2,064

Recent Annual Births (2014–present)

Year Cilla Cillian
2014 — 87
2015 — 121
2016 — 177
2017 — 170
2018 — 193
2019 — 186
2020 — 228
2021 — 340
2022 — 352
2023 — 476
2024 — 668

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1882–2009.

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