How old is someone named Leif?
The average Leif is 29 years old.
Half of all living Leifs are between 10 and 46.
When was Leif popular?
Leif is a modern favorite: it climbed through the 2000s and hit its high in 2022. 257 babies got the name in 2025.
Popular names of 2022 · The most popular names of the 2020s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1910s | 127 | 0 |
| 1920s | 126 | 0 |
| 1930s | 111 | under 100 |
| 1940s | 196 | under 100 |
| 1950s | 442 | 300 |
| 1960s | 886 | 720 |
| 1970s | 1,158 | 1,000 |
| 1980s | 1,236 | 1,200 |
| 1990s | 878 | 850 |
| 2000s | 1,329 | 1,300 |
| 2010s | 1,971 | 2,000 |
| 2020s | 1,542 | 1,500 |
How many Leifs are still alive?
About 9,000 Leifs are alive in the US today. That's 90% of the roughly 10,000 babies named Leif since 1912.
Most Leifs ever born are still alive.
What generation is the name Leif?
About one in three living Leifs are in Gen Alpha, born in 2013 or later.
Is Leif an old name?
Not really. Leif is younger than 51 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Leif will be 33 in 2056, about the same as today.
Is Leif a boy or girl name?
Almost entirely boys: 99.9% of living Leifs are men.
Names the same age as Leif
NAME TWIN
Leif's name twin is Judson. Of all 3,713 names on AgeByName, Judson's age curve is the closest match to Leif's: 89% alike.
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Questions about the name Leif
How old is the average Leif?
The average Leif in the US is 29 years old. The median is 24, so half are older and half younger.
How many people are named Leif?
About 9,000 Leifs are alive in the US today, out of roughly 10,000 babies given the name since 1912.
When was the name Leif most popular?
In 2022, when about 290 baby boys were named Leif.
Is Leif a Gen Alpha name?
Partly. Gen Alpha are the largest group, about 33% of living Leifs, but the name spans several generations.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). Updated each spring. How we calculate this