The baby name Lex appears in baby name data for the United States from 1919 to 2024. It was most popular in 2017 with 52 babies given the name.
In the later years of this period, Lex has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1919 | 17 |
| 1927 | 5 |
| 1936 | 5 |
| 1939 | 15 |
| 1949 | 10 |
| 1951 | 14 |
| 1953 | 12 |
| 1955 | 25 |
| 1956 | 34 |
| 1957 | 5 |
| 1959 | 5 |
| 1962 | 10 |
| 1969 | 5 |
| 1993 | 5 |
| 1998 | 5 |
| 2002 | 12 |
| 2003 | 14 |
| 2004 | 11 |
| 2005 | 38 |
| 2006 | 26 |
| 2007 | 28 |
| 2008 | 26 |
| 2009 | 22 |
| 2010 | 20 |
| 2011 | 43 |
| 2012 | 44 |
| 2013 | 18 |
| 2014 | 32 |
| 2015 | 14 |
| 2016 | 40 |
| 2017 | 52 |
| 2018 | 32 |
| 2019 | 42 |
| 2020 | 24 |
| 2021 | 31 |
| 2022 | 37 |
| 2023 | 32 |
| 2024 | 17 |