How old is someone named Sean?
The average Sean is 38 years old.
Half of all living Seans are between 28 and 50.
When was Sean popular?
Sean was at its most popular in the early 1990s. Parents have been moving away from it for decades, and 623 babies were named Sean in 2025.
Popular names of 1990 · The most popular names of the 1990s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1920s | 12 | 0 |
| 1930s | 106 | under 100 |
| 1940s | 676 | 320 |
| 1950s | 5,589 | 3,900 |
| 1960s | 47,745 | 40,000 |
| 1970s | 84,407 | 76,000 |
| 1980s | 104,680 | 98,000 |
| 1990s | 92,590 | 89,000 |
| 2000s | 64,406 | 63,000 |
| 2010s | 21,606 | 21,000 |
| 2020s | 4,789 | 4,800 |
How many Seans are still alive?
About 400,000 Seans are alive in the US today. That's 93% of the roughly 430,000 babies named Sean since 1925.
Nearly every Sean ever born is still alive, because almost all of them are young.
What generation is the name Sean?
About two in five living Seans are Millennials, born between 1981 and 1996.
- Boomer 3%
- Gen X 29%
- Millennial 40%
- Gen Z 24%
- Gen Alpha 4%
Is Sean an old name?
Somewhat. Sean is older than 64 in 100 names on AgeByName, but younger than plenty of classics.
Looking ahead: if babies keep getting the name at today's pace, the typical Sean will be 61 in 2056, so the name is getting older.
Is Sean a boy or girl name?
Almost entirely boys: 99.3% of living Seans are men.
Names the same age as Sean
NAME TWIN
Sean's name twin is Erik. Of all 3,713 names on AgeByName, Erik's age curve is the closest match to Sean's: 92% alike.
Compare: Sean vs. Shawn
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Questions about the name Sean
How old is the average Sean?
The average Sean in the US is 38 years old. The median is 38, so half are older and half younger.
How many people are named Sean?
About 400,000 Seans are alive in the US today, out of roughly 430,000 babies given the name since 1925.
When was the name Sean most popular?
In 1990, when about 12,000 baby boys were named Sean.
Is Sean a Millennial name?
Partly. Millennials are the largest group, about 40% of living Seans, 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