Lennyn Girl
How popular is Lennyn?
#1,548 girl name in 2025
136 baby girls were named Lennyn in the US in 2025, making it the 1548th most popular girl name. Another 6 boys got the name (#10,691 for boys).
Lennyn popularity over time
Boys Girls
| Rank in 2025 | #1,548 for girls (▲ 248 from 2024) |
|---|---|
| Babies in 2025 | 136 girls, 6 boys |
| 10-year trend | Rising fast (+491% babies vs 2015) |
| Earlier ranks | #5,651 in 2015, #2,659 in 2020 |
| Peak year | 2025 (136 girls) |
| Highest rank | #1,548 in 2025 |
| First recorded | 2009 |
| Boys vs girls (last 10 years) | 7% boys, 93% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Lennyn counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Lennon family of names ranked #213 for girls in 2025 (#227 the year before), with 1,570 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Lennon | 1,421 | 91% |
| Lennyn | 136 | 9% |
| Lennan | 6 | 0% |
| Lenyn | 7 | 0% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Lennyn is most popular
Babies named Lennyn per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
- South Dakota: 1.3 per 1,000 (18 girls)
- Iowa: 0.3 per 1,000 (17 girls)
- Wisconsin: 0.2 per 1,000 (20 girls)
- Michigan: 0.2 per 1,000 (33 girls)
- Utah: 0.1 per 1,000 (10 girls)
Lennyn by decade
Girl names about as popular as Lennyn
Questions
- Is Lennyn a boy or girl name?
- Lennyn is mostly a girl name. Over the last 10 years, 93% of babies named Lennyn were girls.
- How popular is the name Lennyn?
- 136 baby girls were named Lennyn in the US in 2025, making it the 1548th most popular girl name. Another 6 boys got the name (#10,691 for boys).
- When was Lennyn most popular?
- Lennyn peaked in 2025, when 136 girls were given the name. Its highest rank was #1,548 in 2025.
- How many people are named Lennyn?
- 930 babies have been named Lennyn in the US since 1880. We estimate about 927 of them are alive in 2026, with a median age of 5.
- Where is Lennyn most popular?
- From 2021 to 2025, Lennyn was most common in South Dakota, at 1.3 of every 1,000 girls born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.