How old is someone named Seamus?
The average Seamus is 21 years old.
Half of all living Seamuses are between 12 and 27.
When was Seamus popular?
Seamus has been rising for years and peaked in 2008, so most Seamuses are still kids.
Popular names of 2008 · The most popular names of the 2000s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1950s | 25 | under 100 |
| 1960s | 122 | 100 |
| 1970s | 332 | 300 |
| 1980s | 497 | 470 |
| 1990s | 1,241 | 1,200 |
| 2000s | 2,446 | 2,400 |
| 2010s | 2,268 | 2,300 |
| 2020s | 878 | 870 |
How many Seamuses are still alive?
About 7,600 Seamuses are alive in the US today. That's 98% of the roughly 7,800 babies named Seamus since 1957.
Nearly every Seamus ever born is still alive, because almost all of them are young.
What generation is the name Seamus?
About half of living Seamuses are in Gen Z, born between 1997 and 2012.
- Boomer under 1%
- Gen X 5%
- Millennial 15%
- Gen Z 48%
- Gen Alpha 31%
Is Seamus an old name?
Not really. Seamus is younger than 68 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Seamus will be 37 in 2056, so the name is getting older.
Is Seamus a boy or girl name?
Almost entirely boys: over 99.9% of living Seamuses are men.
Names the same age as Seamus
NAME TWIN
Seamus's name twin is Daniella. Of all 3,713 names on AgeByName, Daniella's age curve is the closest match to Seamus's: 94% alike.
Think you can guess a Jessica's age?
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Questions about the name Seamus
How old is the average Seamus?
The average Seamus in the US is 21 years old. The median is 19, so half are older and half younger.
How many people are named Seamus?
About 7,600 Seamuses are alive in the US today, out of roughly 7,800 babies given the name since 1957.
When was the name Seamus most popular?
In 2008, when about 300 baby boys were named Seamus.
Is Seamus a Gen Z name?
Partly. Gen Z are the largest group, about 48% of living Seamuses, 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