Lennyn
Girl name · #1560 in 2025 · Rare
How old is the name Lennyn? In official American birth records, Lennyn has been tracked continuously since 2009, giving it 16 years of documented American history.
Lennyn ranks #1560 among American girls' names as of 2025, with 136 newborns given the name that year. A decade ago it stood at #5653, so the name has been rising over the past ten years. Roughly one in every 13,235 girls born in 2025 was named Lennyn.
The 16-year story
Lennyn first appears in the Social Security records in 2009, when 5 girls received the name. Its all-time peak is essentially right now: 2025, with 136 babies and a rank of #1548. 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 Lennyn per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Lennyn against up to 5 other names.
Uniqueness: will there be another Lennyn in class?
On our rarity read — which blends how common Lennyn is today with its five-year momentum — the name reads as "rare". A high score means genuine rarity — your Lennyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Lennyn is most common
State-level data for Lennyn 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 Lennyn
Statistically, parents drawn to Lennyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Ellowyn, Blessyn, Lowen, Maevyn, and Scottlyn.
EllowynBlessynLowenMaevynScottlynLakelynHollynScotlyn
Rank history (last 25 years)
| Year | Babies named Lennyn | Rank |
|---|---|---|
| 2025 | 136 | #1548 |
| 2024 | 112 | #1796 |
| 2023 | 93 | #2076 |
| 2022 | 99 | #1974 |
| 2021 | 72 | #2460 |
| 2020 | 63 | #2659 |
| 2019 | 46 | #3388 |
| 2018 | 32 | #4357 |
| 2017 | 42 | #3627 |
| 2016 | 46 | #3411 |
| 2015 | 23 | #5653 |
| 2014 | 18 | #6713 |
| 2013 | 7 | #13150 |
| 2012 | 8 | #12199 |
| 2011 | 7 | #13347 |
| 2009 | 5 | #17294 |
Frequently asked questions
How old is the name Lennyn?
In official American birth records, the name Lennyn first appeared in 2009 (over 16 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 16 years.
Is Lennyn a popular girl name?
Lennyn ranked #1560 among girls in 2025 with 136 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #5653.
When was the name Lennyn most popular?
Lennyn peaked in 2025, when 136 American girls received the name (ranked #1548 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Lennyn?
In 2025, roughly 1 in 13,235 newborn American girls was named Lennyn. On our rarity scale (rarity blended with momentum) we classify it as "rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.