Len Boy
How popular is Len?
#8,906 boy name in 2025
8 baby boys were named Len in the US in 2025, making it the 8906th most popular boy name.
2,740living people named Len (est.)
62median age of people named Len
4,616babies named Len since 1880
1 in 414,418US babies born in 2025
Len popularity over time
Boys Girls
| Rank in 2025 | #8,906 for boys (▲ 76 from 2024) |
|---|---|
| Babies in 2025 | 8 boys |
| 10-year trend | Falling (-33% babies vs 2015) |
| Earlier ranks | #6,671 in 2015, #9,548 in 2020 |
| Peak year | 1960 (121 boys) |
| Highest rank | #498 in 1885 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Len counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Lean family of names ranked #3,275 for boys in 2025 (#3,441 the year before), with 24 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Lean | 16 | 67% |
| Len | 8 | 33% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Len by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 91 | #498 |
| 1890s | 65 | #592 |
| 1900s | 87 | #640 |
| 1910s | 242 | #918 |
| 1920s | 314 | #1,045 |
| 1930s | 360 | #954 |
| 1940s | 560 | #752 |
| 1950s | 829 | #689 |
| 1960s | 896 | #712 |
| 1970s | 494 | #773 |
| 1980s | 208 | #2,058 |
| 1990s | 113 | #3,806 |
| 2000s | 94 | #5,581 |
| 2010s | 108 | #5,729 |
| 2020s | 53 | #6,892 |
Boy names about as popular as Len
Questions
- Is Len a boy or girl name?
- Len is mostly a boy name. Over the last 10 years, 100% of babies named Len were boys.
- How popular is the name Len?
- 8 baby boys were named Len in the US in 2025, making it the 8906th most popular boy name.
- When was Len most popular?
- Len peaked in 1960, when 121 boys were given the name. Its highest rank was #498 in 1885.
- How many people are named Len?
- 4,616 babies have been named Len in the US since 1880. We estimate about 2,740 of them are alive in 2026, with a median age of 62.
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.