Lex
Boy name · #2308 in 2025 · Very rare
How old is the name Lex? In official American birth records, Lex has been tracked continuously since 1892, giving it 133 years of documented American history.
Lex is currently the #2308 boy name in the United States — 60 babies received it in 2025. A decade ago it stood at #2068, so the name has been falling over the past ten years. Roughly one in every 30,000 boys born in 2025 was named Lex.
The 133-year story
Lex first appears in the Social Security records in 1892, when 5 boys received the name. Its peak came in 2012, when 94 boys were named Lex — good for #1637 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Lex per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Lex against up to 5 other names.
Uniqueness: will there be another Lex in class?
On our rarity read — which blends how common Lex is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Lex will likely be the only one in the room, with the occasional spelling-out as the price.
Where Lex is most common
State-level data for Lex is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Nicknames & related forms of Lex
Lex belongs to the Alexander family — closely related nicknames and spellings of the same name.
Counted as one name, the Alexander family went to about 10,374 boys in 2025 — together they'd rank around #10, versus #2308 for Lex alone.
Names like Lex
Statistically, parents drawn to Lex tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Levin, Leyton, Ryu, Aj, and Lathan.
LevinLeytonRyuAjLathanLeninLinusElan
Rank history (last 25 years)
| Year | Babies named Lex | Rank |
|---|---|---|
| 2025 | 60 | #2304 |
| 2024 | 65 | #2210 |
| 2023 | 90 | #1787 |
| 2022 | 83 | #1892 |
| 2021 | 93 | #1740 |
| 2020 | 83 | #1798 |
| 2019 | 90 | #1737 |
| 2018 | 82 | #1838 |
| 2017 | 91 | #1717 |
| 2016 | 76 | #1921 |
| 2015 | 68 | #2068 |
| 2014 | 59 | #2256 |
| 2013 | 57 | #2250 |
| 2012 | 94 | #1637 |
| 2011 | 85 | #1730 |
| 2010 | 78 | #1850 |
| 2009 | 84 | #1789 |
| 2008 | 87 | #1736 |
| 2007 | 93 | #1650 |
| 2006 | 90 | #1605 |
| 2005 | 81 | #1659 |
| 2004 | 79 | #1629 |
| 2003 | 85 | #1513 |
| 2002 | 59 | #1888 |
| 2001 | 25 | #3410 |
Frequently asked questions
How old is the name Lex?
In official American birth records, the name Lex first appeared in 1892 (over 133 years ago), when 5 newborn boys received the name. It has over a century of continuous American history.
Is Lex a popular boy name?
Lex ranked #2308 among boys in 2025 with 60 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2068.
When was the name Lex most popular?
Lex peaked in 2012, when 94 American boys received the name (ranked #1637 that year). Since 2012 the name has declined from that high.
How rare is the name Lex?
In 2025, roughly 1 in 30,000 newborn American boys was named Lex. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.