Alexei is a rare variant of Alex that peaked in 2021 and remains in steady use.
Alexei is predominantly a boy name. In 2025 it ranked #3,245 for boy births in the United States (and #6,971 across all names), given to 36 babies. Alexei first appears in 1961 and peaked in 2021 (51 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 36 | 36 | — | #3,245 |
| 2024 | 47 | 47 | — | #2,752 |
| 2023 | 34 | 34 | — | #3,419 |
| 2022 | 51 | 51 | #13,689 | #2,832 |
| 2021 | 56 | 56 | #15,393 | #2,552 |
| 2020 | 41 | 41 | — | #2,887 |
| 2019 | 47 | 47 | — | #2,696 |
| 2018 | 37 | 37 | — | #3,107 |
| 2017 | 37 | 37 | — | #3,127 |
| 2016 | 34 | 34 | — | #3,296 |
| 2015 | 45 | 45 | #14,588 | #2,968 |
| 2014 | 35 | 35 | — | #3,155 |
| 2013 | 32 | 32 | — | #3,341 |
| 2012 | 25 | 25 | — | #4,006 |
| 2011 | 34 | 34 | #16,899 | #3,609 |
| 2010 | 43 | 43 | #13,524 | #3,129 |
| 2009 | 29 | 29 | — | #3,643 |
| 2008 | 45 | 45 | #17,646 | #2,951 |
| 2007 | 33 | 33 | #15,594 | #3,797 |
| 2006 | 38 | 38 | — | #2,934 |
| 2005 | 45 | 45 | — | #2,496 |
| 2004 | 42 | 42 | #11,671 | #2,955 |
| 2003 | 40 | 40 | #15,886 | #2,784 |
| 2002 | 42 | 42 | #11,158 | #2,755 |
| 2001 | 53 | 53 | #15,451 | #2,151 |
| 2000 | 54 | 54 | #13,226 | #2,087 |
| 1999 | 34 | 34 | #11,433 | #3,033 |
| 1998 | 47 | 47 | #7,555 | #2,453 |
| 1997 | 39 | — | #9,056 | #2,615 |
| 1996 | 33 | — | #8,167 | #3,108 |
| 1995 | 19 | — | — | #3,433 |
| 1994 | 25 | — | — | #2,851 |
| 1993 | 25 | — | #10,628 | #3,504 |
| 1992 | 18 | — | — | #3,460 |
| 1991 | 5 | — | — | #8,260 |
| 1990 | 5 | — | — | #8,147 |
| 1989 | 8 | — | — | #5,637 |
| 1988 | 11 | — | — | #4,169 |
| 1987 | 8 | — | — | #4,979 |
| 1986 | 8 | — | — | #4,862 |
| 1984 | 9 | — | — | #4,222 |
| 1983 | 8 | — | — | #4,510 |
| 1982 | 13 | — | — | #3,288 |
| 1980 | 9 | — | — | #4,148 |
| 1979 | 8 | — | — | #4,420 |
| 1978 | 11 | — | — | #3,402 |
| 1977 | 10 | — | — | #3,614 |
| 1976 | 5 | — | — | #5,608 |
| 1975 | 13 | — | — | #2,905 |
| 1974 | 7 | — | — | #4,199 |
| 1973 | 8 | — | — | #3,702 |
| 1972 | 5 | — | — | #5,000 |
| 1971 | 5 | — | — | #4,927 |
| 1970 | 11 | — | — | #2,892 |
| 1968 | 13 | — | — | #2,312 |
| 1967 | 6 | — | — | #3,567 |
| 1961 | 5 | — | — | #4,073 |