Cillian
Last seen for girls in 2024 at #13,477 · #507 for boys in 2025, 595 births
Given to boys 99.9% of the time
- Peak · boys
- 2024 · 668 births
- Debut · boys
- 5 births
- In top 100 · boys
- neverof 146 years
- Total births · boys
- 4,084since 1995
Cillian over time
Rank among boys' names. Cillian has never cracked the top 400 here.
Gaps mean fewer than 5 babies received the name that year, so the SSA doesn't publish it.
Show data table
| Year | girls | boys | ||
|---|---|---|---|---|
| rank | births | rank | births | |
| 2025 | — | #507 | 595 | |
| 2024 | #13,477 | 6 | #463 | 668 |
| 2023 | — | #594 | 477 | |
| 2022 | — | #735 | 353 | |
| 2021 | — | #747 | 341 | |
| 2020 | — | #957 | 228 | |
| 2019 | — | #1,078 | 186 | |
| 2018 | — | #1,052 | 193 | |
| 2017 | — | #1,126 | 170 | |
| 2016 | — | #1,105 | 177 | |
| 2015 | — | #1,416 | 121 | |
| 2014 | — | #1,730 | 87 | |
| 2013 | — | #1,851 | 77 | |
| 2012 | — | #1,942 | 73 | |
| 2011 | — | #2,035 | 66 | |
| 2010 | — | #2,354 | 54 | |
| 2009 | — | #2,451 | 52 | |
| 2008 | — | #2,467 | 51 | |
| 2007 | — | #2,974 | 39 | |
| 2006 | — | #2,744 | 42 | |
| 2005 | — | #7,096 | 10 | |
| 2004 | — | #8,143 | 8 | |
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| 2001 | — | #9,243 | 6 | |
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| 1999 | — | #9,912 | 5 | |
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| 1995 | — | #8,868 | 5 | |
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The first year at least five boys were named Cillian! It came in at #8,868, and was given to 5 baby boys.
Quietest stretch: 1995–2000, when fewer than 6 boys a year got the name.
See more about Cillian
- 44 spots since 2024 (#463 → #507)
- 450 spots since 2020 (#957 → #507)
- 909 spots since 2015 (#1,416 → #507)
- Biggest jump: 210 spots in 2021 (#957 → #747)
- Biggest drop: 44 spots in 2025 (#463 → #507)
- Debuted 1995
- Peaked 2024 at #463 (668 births)
- Not yet halved from its peak
- Top 10: never
- Top 100: never
- Top 1,000: 6 yrs · run 2020–2025
- Highest: 1 in 2,579 boys born in 2024 were named Cillian (0.04%)
- Latest: 1 in 2,871 boys born in 2025 (0.03%)
- 65.2% of all boys named Cillian (2,662) were born in this decade
Show by decade
| Decade | Births | Best rank | Avg rank |
|---|---|---|---|
| 1990s | 10 | #8,868 (1995) | #9,390 |
| 2000s | 208 | #2,451 (2009) | #5,017 |
| 2010s | 1,204 | #1,052 (2018) | #1,569 |
| 2020s | 2,662 | #463 (2024) | #667 |
All figures count published births only (names given to at least 5 boys in a year). Registrations before 1937 are incomplete, so early shares and totals run low.
Cillian in 2018
Top boys' names in 2018
More about 2018
boys
1,816,158 boys got a published name in 2018; 1 in 9,410 of them was named Cillian, which outranked 92.5% of the 14,118 boys' names that year. The ten most popular names covered 7.9% of boys (44.2% in 1880, 8.0% in 2025).