Seamus Boy
How popular is Seamus?
#1,276 boy name in 2025
154 baby boys were named Seamus in the US in 2025, making it the 1276th most popular boy name.
7,637living people named Seamus (est.)
19median age of people named Seamus
7,809babies named Seamus since 1880
1 in 21,528US babies born in 2025
Seamus popularity over time
| Rank in 2025 | #1,276 for boys (▲ 172 from 2024) |
|---|---|
| Babies in 2025 | 154 boys |
| 10-year trend | Falling (-30% babies vs 2015) |
| Earlier ranks | #946 in 2015, #1,194 in 2020 |
| Peak year | 2008 (298 boys) |
| Highest rank | #734 in 2003 |
| First recorded | 1957 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Where Seamus is most popular
Babies named Seamus per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
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- Massachusetts: 0.6 per 1,000 (76 boys)
- Connecticut: 0.2 per 1,000 (16 boys)
- Pennsylvania: 0.2 per 1,000 (61 boys)
- New Hampshire: 0.2 per 1,000 (5 boys)
- New York: 0.2 per 1,000 (69 boys)
Seamus by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1950s | 25 | #2,662 |
| 1960s | 122 | #1,808 |
| 1970s | 332 | #1,312 |
| 1980s | 497 | #1,198 |
| 1990s | 1,241 | #797 |
| 2000s | 2,446 | #734 |
| 2010s | 2,268 | #836 |
| 2020s | 878 | #1,194 |
Boy names about as popular as Seamus
Questions
- Is Seamus a boy or girl name?
- Seamus is mostly a boy name. Over the last 10 years, 100% of babies named Seamus were boys.
- How popular is the name Seamus?
- 154 baby boys were named Seamus in the US in 2025, making it the 1276th most popular boy name.
- When was Seamus most popular?
- Seamus peaked in 2008, when 298 boys were given the name. Its highest rank was #734 in 2003.
- How many people are named Seamus?
- 7,809 babies have been named Seamus in the US since 1880. We estimate about 7,637 of them are alive in 2026, with a median age of 19.
- Where is Seamus most popular?
- From 2021 to 2025, Seamus was most common in Massachusetts, at 0.6 of every 1,000 boys born there.
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.