Alastair is a rare boys' name that has climbed to its highest level yet, peaking in 2025.
Alastair is a boy name. In 2025 it ranked #2,147 for boy births in the United States (and #4,583 across all names), given to 67 babies. Alastair first appears in 1922 and peaked in 2025 (67 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 67 | 67 | #2,147 |
| 2024 | 59 | 59 | #2,372 |
| 2023 | 60 | 60 | #2,315 |
| 2022 | 50 | 50 | #2,649 |
| 2021 | 61 | 61 | #2,277 |
| 2020 | 39 | 39 | #2,980 |
| 2019 | 62 | 62 | #2,231 |
| 2018 | 46 | 46 | #2,676 |
| 2017 | 61 | 61 | #2,187 |
| 2016 | 50 | 50 | #2,518 |
| 2015 | 47 | 47 | #2,600 |
| 2014 | 36 | 36 | #3,091 |
| 2013 | 28 | 28 | #3,665 |
| 2012 | 38 | 38 | #3,005 |
| 2011 | 27 | 27 | #3,795 |
| 2010 | 25 | 25 | #3,997 |
| 2009 | 33 | 33 | #3,335 |
| 2008 | 37 | 37 | #3,105 |
| 2007 | 29 | 29 | #3,594 |
| 2006 | 36 | 36 | #3,026 |
| 2005 | 24 | 24 | #3,818 |
| 2004 | 18 | 18 | #4,607 |
| 2003 | 13 | 13 | #5,566 |
| 2002 | 13 | 13 | #5,405 |
| 2001 | 14 | 14 | #5,146 |
| 2000 | 13 | 13 | #5,302 |
| 1999 | 15 | 15 | #4,542 |
| 1998 | 10 | 10 | #5,850 |
| 1997 | 17 | — | #3,883 |
| 1996 | 17 | — | #3,834 |
| 1995 | 17 | — | #3,696 |
| 1994 | 11 | — | #5,115 |
| 1993 | 16 | — | #3,821 |
| 1992 | 22 | — | #3,003 |
| 1991 | 14 | — | #4,011 |
| 1990 | 13 | — | #4,173 |
| 1989 | 18 | — | #3,207 |
| 1988 | 20 | — | #2,767 |
| 1987 | 19 | — | #2,727 |
| 1986 | 24 | — | #2,290 |
| 1985 | 14 | — | #3,217 |
| 1984 | 12 | — | #3,462 |
| 1983 | 6 | — | #5,496 |
| 1982 | 10 | — | #3,970 |
| 1981 | 14 | — | #3,036 |
| 1980 | 8 | — | #4,509 |
| 1979 | 6 | — | #5,369 |
| 1978 | 6 | — | #5,075 |
| 1977 | 8 | — | #4,173 |
| 1974 | 6 | — | #4,646 |
| 1972 | 8 | — | #3,625 |
| 1971 | 5 | — | #4,917 |
| 1970 | 9 | — | #3,283 |
| 1969 | 5 | — | #4,411 |
| 1962 | 5 | — | #4,043 |
| 1948 | 6 | — | #3,321 |
| 1929 | 7 | — | #3,250 |
| 1925 | 5 | — | #4,201 |
| 1922 | 5 | — | #4,317 |