Name Legacy

Cillian

Recorded 1995–2025 · United States

Cillian was most popular in 2024, when 674 American babies were given the name — ranking #935 that year. In 2025 it ranked #1,018, with 595 births. Across 1880–2025 the Social Security Administration has recorded 4,090 people named Cillian.

Most popular in2024
Rank that year#935
Births that year674
Total since 18804,090

Cillian over time

18802025
Births per year. The dot marks Cillian’s peak in 2024. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Names that peaked alongside Cillian

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See Cillian on the interactive charts

Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org