Girls' name · since 1966
Lenni
Since 1966, U.S. Social Security records show 341 babies named Lenni, peaking in 2023. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #14,857 of 72,339
- all-time among girls
- #3,357 of 17,297
- 2025 SSA year
- 341
- born since 1966
- 2020s
- peak decade
Yes -- Lenni is the #3357 most popular girls' name in the U.S. today, with 341 recorded since 1966.
Lenni has 341 recorded births among girls since 1966, per the U.S. Social Security Administration, ranked #3357 as of the latest data, more common than 81% of girls, busiest in the 2020s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1966 to 2025.
- #14,857 of 72,339 all-time among girls
- #3,357 of 17,297 2025 SSA year
- 341 born since 1966
- 2020s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Lenni ranks #14,857 of 72,339 girls' names by all-time recorded births (highest first) and #3,357 of 17,297 among girls' names in 2025. 341 born since 1966, peaking in the 2020s.
- #14,857 of 72,339
- all-time among girls
- #3,357 of 17,297
- 2025 SSA year
- 341
- born since 1966
- 2020s
- peak decade
Lenni's 341 recorded births place it above 79.43% of the 72,339 girls names in the full SSA archive.
The state file records this name in 5 jurisdictions, led by Michigan.
How Lenni compares
341 48th percentile among 17,297 names currently given to girls
Based on all-time total births among currently-ranked girls names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Lenni's all-time total is 9% below the median girls name, and Olivia still leads by a wide margin.
| Metric | Lenni | Median girls name (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 341 | 376 | 567,345 |
| Peak-year births | 52 | 21 | 19,840 |
Lenni's usage pattern, beyond the headline number
Lenni splits its recorded history at 2018: 80% of all births land in the more recent half, 20% in the earlier half, a lean toward present-day use rather than a passing spike. The single quietest year was 1966 (5 births) -- compare that against the 2023 peak of 52 for a sense of just how much the name's popularity has swung.
Lenni popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1966–2025
- Peak year (2023)
- 52
- Annual births at peak, across 60 years of records
Lenni popularity over time - boys
16 total births recorded since 2018 (Lenni as boys' name)
Lenni by decade
2020s is the heaviest window (234 births, 69% of the file).
2020s was Lenni's strongest decade.
234 babies received the name during that ten-year window, about 69% of all-time use.
Lenni births by decade
Total births in each ten-year window
- 1960s 5
1960s
5 births
- 1970s 6
1970s
6 births
- 2010s
2010s
96 births
- 2020s
2020s
234 births
What this shows Peak: 2020s at 234 births (69% of all-time use).
Lenni by state
Where Lenni concentrates geographically, total births since 1966
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Michigan | | 10 | 2.9% |
| #2 | Pennsylvania | | 10 | 2.9% |
| #3 | Minnesota | | 6 | 1.8% |
| #4 | Florida | | 5 | 1.5% |
| #5 | Texas | | 5 | 1.5% |
10 of 341 births nationwide. Compared to a flat distribution across 5 reporting states.
Frequently Asked Questions
How popular is the name Lenni? ▼
Where does Lenni sit in the SSA name archive? ▼
When was Lenni most popular? ▼
Where is Lenni most popular? ▼
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What names are similar to Lenni? ▼
What to do with Lenni's data
- Michigan records the most Lennis (10 births) -- see the full state breakdown if geography matters to your decision. Michigan names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Lenni
Nearby Names Like Lenni
Names with a similar sound, spelling, or feel to Lenni
Compare Lenni side by side: Lenni vs Lena Lenni vs Lenora Lenni vs Lenore
Related Names
Names with a similar popularity rank to Lenni
Nationwide names with similar peak year or record span
Two nationwide peer axes for Lenni: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2023)
Similar record span (~59 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1966–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Lenni draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.