Lenny
Girl name · #2797 in 2025 · Very rare
How old is the name Lenny? In official American birth records, Lenny has been tracked continuously since 1943, giving it 82 years of documented American history.
In 2025, 61 baby girls were named Lenny, placing it at #2797 in the official national rankings. A decade ago it stood at #8447, so the name has been rising over the past ten years. Roughly one in every 29,508 girls born in 2025 was named Lenny.
The 82-year story
Lenny first appears in the Social Security records in 1943, when 7 girls received the name. Its all-time peak is essentially right now: 2025, with 61 babies and a rank of #2778. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. 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 Lenny per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Lenny against up to 5 other names.
Uniqueness: will there be another Lenny in class?
On our rarity read — which blends how common Lenny is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Lenny will likely be the only one in the room, with the occasional spelling-out as the price.
Where Lenny is most common
State-level data for Lenny 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).
Names like Lenny
Statistically, parents drawn to Lenny tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Sonny, Henny, Alanny, Elianny, and Anny.
SonnyHennyAlannyEliannyAnnyBennyBriannyDarianny
Rank history (last 25 years)
| Year | Babies named Lenny | Rank |
|---|---|---|
| 2025 | 61 | #2778 |
| 2024 | 56 | #2930 |
| 2023 | 50 | #3225 |
| 2022 | 43 | #3595 |
| 2021 | 42 | #3614 |
| 2020 | 27 | #4757 |
| 2019 | 24 | #5306 |
| 2018 | 25 | #5152 |
| 2017 | 23 | #5517 |
| 2016 | 12 | #8875 |
| 2015 | 13 | #8447 |
| 2014 | 7 | #13069 |
| 2013 | 6 | #14582 |
| 2011 | 5 | #16764 |
| 2010 | 9 | #11246 |
| 2009 | 7 | #13704 |
| 2008 | 9 | #11599 |
| 2007 | 6 | #15491 |
| 2006 | 10 | #10611 |
| 2004 | 10 | #9892 |
| 2003 | 7 | #12408 |
| 2002 | 11 | #8837 |
| 1998 | 5 | #14122 |
| 1997 | 5 | #13724 |
| 1996 | 5 | #13518 |
Frequently asked questions
How old is the name Lenny?
In official American birth records, the name Lenny first appeared in 1943 (over 82 years ago), when 7 newborn girls received the name. It has been tracked in modern national records for 82 years.
Is Lenny a popular girl name?
Lenny ranked #2797 among girls in 2025 with 61 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #8447.
When was the name Lenny most popular?
Lenny peaked in 2025, when 61 American girls received the name (ranked #2778 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Lenny?
In 2025, roughly 1 in 29,508 newborn American girls was named Lenny. 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.