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 | |
| 2003 | — | — | ||
| 2002 | — | — | ||
| 2001 | — | #9,243 | 6 | |
| 2000 | — | — | ||
| 1999 | — | #9,912 | 5 | |
| 1998 | — | — | ||
| 1997 | — | — | ||
| 1996 | — | — | ||
| 1995 | — | #8,868 | 5 | |
| 1994 | — | — | ||
| 1993 | — | — | ||
| 1992 | — | — | ||
| 1991 | — | — | ||
| 1990 | — | — | ||
| 1989 | — | — | ||
| 1988 | — | — | ||
| 1987 | — | — | ||
| 1986 | — | — | ||
| 1985 | — | — | ||
| 1984 | — | — | ||
| 1983 | — | — | ||
| 1982 | — | — | ||
| 1981 | — | — | ||
| 1980 | — | — | ||
| 1979 | — | — | ||
| 1978 | — | — | ||
| 1977 | — | — | ||
| 1976 | — | — | ||
| 1975 | — | — | ||
| 1974 | — | — | ||
| 1973 | — | — | ||
| 1972 | — | — | ||
| 1971 | — | — | ||
| 1970 | — | — | ||
| 1969 | — | — | ||
| 1968 | — | — | ||
| 1967 | — | — | ||
| 1966 | — | — | ||
| 1965 | — | — | ||
| 1964 | — | — | ||
| 1963 | — | — | ||
| 1962 | — | — | ||
| 1961 | — | — | ||
| 1960 | — | — | ||
| 1959 | — | — | ||
| 1958 | — | — | ||
| 1957 | — | — | ||
| 1956 | — | — | ||
| 1955 | — | — | ||
| 1954 | — | — | ||
| 1953 | — | — | ||
| 1952 | — | — | ||
| 1951 | — | — | ||
| 1950 | — | — | ||
| 1949 | — | — | ||
| 1948 | — | — | ||
| 1947 | — | — | ||
| 1946 | — | — | ||
| 1945 | — | — | ||
| 1944 | — | — | ||
| 1943 | — | — | ||
| 1942 | — | — | ||
| 1941 | — | — | ||
| 1940 | — | — | ||
| 1939 | — | — | ||
| 1938 | — | — | ||
| 1937 | — | — | ||
| 1936 | — | — | ||
| 1935 | — | — | ||
| 1934 | — | — | ||
| 1933 | — | — | ||
| 1932 | — | — | ||
| 1931 | — | — | ||
| 1930 | — | — | ||
| 1929 | — | — | ||
| 1928 | — | — | ||
| 1927 | — | — | ||
| 1926 | — | — | ||
| 1925 | — | — | ||
| 1924 | — | — | ||
| 1923 | — | — | ||
| 1922 | — | — | ||
| 1921 | — | — | ||
| 1920 | — | — | ||
| 1919 | — | — | ||
| 1918 | — | — | ||
| 1917 | — | — | ||
| 1916 | — | — | ||
| 1915 | — | — | ||
| 1914 | — | — | ||
| 1913 | — | — | ||
| 1912 | — | — | ||
| 1911 | — | — | ||
| 1910 | — | — | ||
| 1909 | — | — | ||
| 1908 | — | — | ||
| 1907 | — | — | ||
| 1906 | — | — | ||
| 1905 | — | — | ||
| 1904 | — | — | ||
| 1903 | — | — | ||
| 1902 | — | — | ||
| 1901 | — | — | ||
| 1900 | — | — | ||
| 1899 | — | — | ||
| 1898 | — | — | ||
| 1897 | — | — | ||
| 1896 | — | — | ||
| 1895 | — | — | ||
| 1894 | — | — | ||
| 1893 | — | — | ||
| 1892 | — | — | ||
| 1891 | — | — | ||
| 1890 | — | — | ||
| 1889 | — | — | ||
| 1888 | — | — | ||
| 1887 | — | — | ||
| 1886 | — | — | ||
| 1885 | — | — | ||
| 1884 | — | — | ||
| 1883 | — | — | ||
| 1882 | — | — | ||
| 1881 | — | — | ||
| 1880 | — | — | ||
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 2024
Top girls' names in 2024
Top boys' names in 2024
More about 2024
girls
1,620,190 girls got a published name in 2024; 1 in 270,032 of them was named Cillian, which outranked 24.0% of the 17,726 girls' names that year. The ten most popular names covered 7.1% of girls (24.6% in 1880, 7.0% in 2025).
- #12,161Zymira7
- #12,161Zyn7
- #12,161Zyomi7
- #13,477Cillian6
- #13,477Aada6
- #13,477Aadiya6
- #13,477Aalaysia6
- #15,293Aabha5
- #15,293Aaina5
- #15,293Aaisha5
Tied with 1,815 names at #13,477; 3 shown. Tied names share a rank, as in SSA's lists.
Among names in the top 1,000 of either year.
boys
1,722,888 boys got a published name in 2024; 1 in 2,579 of them was named Cillian, which outranked 96.8% of the 14,294 boys' names that year. The ten most popular names covered 8.0% of boys (44.2% in 1880, 8.0% in 2025).
Among names in the top 1,000 of either year.