Unisex name · since 2009
Lennyn
Lennyn has 809 recorded births since 2009 in federal Social Security data, most heavily in 2025 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #8,663 of 72,339
- all-time among girls
- #1,560 of 17,297
- 2025 SSA year
- 809
- born since 2009
- 2020s
- peak decade
Yes -- Lennyn is the #1560 most popular unisex name in the U.S. today, with 809 recorded since 2009.
According to the U.S. Social Security Administration, Lennyn has been recorded 809 times among girls since 2009, currently ranked #1560 nationally and more common than 91% of girls, with its heaviest use in the 2020s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 2009 to 2025.
- #8,663 of 72,339 all-time among girls
- #1,560 of 17,297 2025 SSA year
- 809 born since 2009
- 2020s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Lennyn ranks #8,663 of 72,339 girls' names by all-time recorded births (highest first) and #1,560 of 17,297 among girls' names in 2025. 809 born since 2009, peaking in the 2020s.
- #8,663 of 72,339
- all-time among girls
- #1,560 of 17,297
- 2025 SSA year
- 809
- born since 2009
- 2020s
- peak decade
Lennyn's 809 recorded births place it above 88.02% of the 72,339 girls names in the full SSA archive.
18 jurisdictions carry state-level records, led by Michigan.
How Lennyn compares
809 Top 36% higher than 64% of 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
Lennyn's all-time total is 115% above the median girls name, and Olivia still leads by a wide margin.
| Metric | Lennyn | Median girls name (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 809 | 376 | 567,345 |
| Peak-year births | 136 | 21 | 19,840 |
Lennyn's usage pattern, beyond the headline number
Splitting Lennyn's full recorded timeline at 2018, 81% of its total births fall in the more recent half of the record versus 19% in the earlier half -- usage has skewed toward the present, not a one-decade spike. Its quietest year on record was 2009, with just 5 recorded births -- worth weighing against the 2025 peak of 136 to see the full range of the name's swing in popularity.
Lennyn popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 2009–2025
- Peak year (2025)
- 136
- Annual births at peak, across 17 years of records
Lennyn popularity over time - boys
121 total births recorded since 2001 (Lennyn as boys' name)
Lennyn by decade
2020s is the heaviest window (575 births, 71% of the file).
2020s was Lennyn's strongest decade.
575 babies received the name during that ten-year window, about 71% of all-time use.
Lennyn births by decade
Total births in each ten-year window
- 2000s 5
2000s
5 births
- 2010s 229
2010s
229 births
- 2020s
2020s
575 births
What this shows Peak: 2020s at 575 births (71% of all-time use).
How Lennyn compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Lennyn's total volume
Lennyn by state
Where Lennyn concentrates geographically, total births since 2009
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Michigan | | 33 | 4.1% |
| #2 | Utah | | 25 | 3.1% |
| #3 | Wisconsin | | 25 | 3.1% |
| #4 | Iowa | | 23 | 2.8% |
| #5 | Florida | | 18 | 2.2% |
| #6 | South Dakota | | 18 | 2.2% |
| #7 | Minnesota | | 17 | 2.1% |
| #8 | Pennsylvania | | 15 | 1.9% |
33 of 809 births nationwide. Compared to a flat distribution across 18 reporting states.
Lennyn appears in 18 states. Explore state details →
Frequently Asked Questions
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What to do with Lennyn's data
- Michigan records the most Lennyns (33 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 Lennyn
Nearby Names Like Lennyn
Names with a similar sound, spelling, or feel to Lennyn
Compare Lennyn side by side: Lennyn vs Lena Lennyn vs Lenora Lennyn vs Lenore
Related Names
Names with a similar popularity rank to Lennyn
Nationwide names with similar peak year or record span
Two nationwide peer axes for Lennyn: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2025)
Similar record span (~16 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, 2009–2025 (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 Lennyn 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.