How old is someone named Cullen?
The average Cullen is 23 years old.
Half of all living Cullens are between 11 and 31.
When was Cullen popular?
Few names are as steady as Cullen. It peaked in 2010, but babies have been named Cullen every year since records began, and 200 were in 2025.
Popular names of 2010 · The most popular names of the 2010s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 33 | 0 |
| 1910s | 243 | 0 |
| 1920s | 308 | 0 |
| 1930s | 226 | under 100 |
| 1940s | 231 | under 100 |
| 1950s | 250 | 170 |
| 1960s | 323 | 260 |
| 1970s | 657 | 590 |
| 1980s | 1,203 | 1,100 |
| 1990s | 3,246 | 3,100 |
| 2000s | 3,251 | 3,200 |
| 2010s | 5,105 | 5,100 |
| 2020s | 1,578 | 1,600 |
How many Cullens are still alive?
About 15,000 Cullens are alive in the US today. That's 91% of the roughly 17,000 babies named Cullen since 1880.
Nearly every Cullen ever born is still alive, because almost all of them are young.
What generation is the name Cullen?
About two in five living Cullens are in Gen Z, born between 1997 and 2012.
Is Cullen an old name?
Not really. Cullen is younger than 64 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Cullen will be 39 in 2056, so the name is getting older.
Is Cullen a boy or girl name?
Almost entirely boys: 99.3% of living Cullens are men.
Names the same age as Cullen
NAME TWIN
Cullen's name twin is Ahmed. Of all 3,713 names on AgeByName, Ahmed's age curve is the closest match to Cullen's: 88% alike.
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Questions about the name Cullen
How old is the average Cullen?
The average Cullen in the US is 23 years old. The median is 19, so half are older and half younger.
How many people are named Cullen?
About 15,000 Cullens are alive in the US today, out of roughly 17,000 babies given the name since 1880.
When was the name Cullen most popular?
In 2010, when about 690 baby boys were named Cullen.
Is Cullen a Gen Z name?
Partly. Gen Z are the largest group, about 40% of living Cullens, 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