Dex is a rare boys' name that peaked in 2016 and remains in steady use.
Dex is a boy name. In 2025 it ranked #4,897 for boy births in the United States (and #10,361 across all names), given to 20 babies. Dex first appears in 1952 and peaked in 2016 (43 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 20 | 20 | #4,897 |
| 2024 | 29 | 29 | #3,824 |
| 2023 | 38 | 38 | #3,189 |
| 2022 | 27 | 27 | #4,015 |
| 2021 | 35 | 35 | #3,316 |
| 2020 | 33 | 33 | #3,358 |
| 2019 | 32 | 32 | #3,511 |
| 2018 | 30 | 30 | #3,624 |
| 2017 | 29 | 29 | #3,698 |
| 2016 | 43 | 43 | #2,796 |
| 2015 | 26 | 26 | #4,006 |
| 2014 | 33 | 33 | #3,319 |
| 2013 | 22 | 22 | #4,361 |
| 2012 | 27 | 27 | #3,822 |
| 2011 | 19 | 19 | #4,860 |
| 2010 | 11 | 11 | #7,198 |
| 2009 | 13 | 13 | #6,524 |
| 2008 | 8 | 8 | #9,203 |
| 2006 | 6 | 6 | #11,007 |
| 2005 | 6 | 6 | #10,436 |
| 2003 | 8 | 8 | #8,042 |
| 2000 | 5 | 5 | #10,825 |
| 1999 | 6 | 6 | #9,006 |
| 1998 | 7 | 7 | #7,790 |
| 1996 | 8 | — | #6,662 |
| 1995 | 6 | — | #8,073 |
| 1994 | 6 | — | #8,027 |
| 1993 | 5 | — | #9,114 |
| 1992 | 10 | — | #5,341 |
| 1991 | 12 | — | #4,561 |
| 1990 | 14 | — | #4,029 |
| 1989 | 13 | — | #4,088 |
| 1988 | 19 | — | #2,883 |
| 1987 | 12 | — | #3,787 |
| 1986 | 17 | — | #2,922 |
| 1985 | 18 | — | #2,743 |
| 1952 | 5 | — | #3,864 |