Lenni
Girl name · #3357 in 2025 · Uniqueness 59/100
In 2025, 46 baby girls were named Lenni, placing it at #3357 in the official national rankings. A decade ago it stood at #11835, so the name has been rising over the past ten years. Roughly one in every 39,130 girls born in 2025 was named Lenni.
The 59-year story
Lenni first appears in the Social Security records in 1966, when 5 girls received the name. Its all-time peak is essentially right now: 2023, with 52 babies and a rank of #3140. 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 Lenni per year, 1880–2025. Source: SSA.
Unlock the 5-year forecast and compare Lenni against up to 5 other names.
Uniqueness: will there be another Lenni in class?
Lenni scores 59 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "distinctive" band. That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Lenni is most common
State-level data for Lenni is sparse in 2025 — the name's footprint is too small for most states to report (the SSA suppresses counts under 5 per state for privacy).
Names like Lenni
Statistically, parents drawn to Lenni tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Leilanni, Avanni, Ailanni, Jianni, and Leiani.
LeilanniAvanniAilanniJianniLeianiAylanniAlanniKaylanni
Rank history (last 25 years)
| Year | Babies named Lenni | Rank |
|---|---|---|
| 2025 | 46 | #3342 |
| 2024 | 45 | #3459 |
| 2023 | 52 | #3140 |
| 2022 | 29 | #4671 |
| 2021 | 32 | #4326 |
| 2020 | 30 | #4453 |
| 2019 | 25 | #5163 |
| 2018 | 13 | #8146 |
| 2017 | 20 | #6044 |
| 2016 | 15 | #7602 |
| 2015 | 8 | #11835 |
| 2014 | 9 | #10955 |
| 2013 | 6 | #14582 |
| 1977 | 6 | #8444 |
| 1966 | 5 | #6564 |
Frequently asked questions
Is Lenni a popular girl name?
Lenni ranked #3357 among girls in 2025 with 46 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #11835.
When was the name Lenni most popular?
Lenni peaked in 2023, when 52 American girls received the name (ranked #3140 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Lenni?
In 2025, roughly 1 in 39,130 newborn American girls was named Lenni. It scores 59/100 on our uniqueness scale (rarity blended with momentum), which we classify as "distinctive".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.