Seamus
Boy name · #1279 in 2025 · Uniqueness 67/100
In 2025, 154 baby boys were named Seamus, placing it at #1279 in the official national rankings. A decade ago it stood at #946, so the name has been falling over the past ten years. Roughly one in every 11,688 boys born in 2025 was named Seamus.
Babies named Seamus per year, 1880–2025. Source: SSA.
The 68-year story
Seamus first appears in the Social Security records in 1957, when 9 boys received the name. Its peak came in 2008, when 298 boys were named Seamus — good for #753 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Unlock the 5-year forecast and compare Seamus against up to 5 other names.
Uniqueness: will there be another Seamus in class?
Seamus scores 67 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "rare" band. A high score means genuine rarity — your Seamus will likely be the only one in the room, with the occasional spelling-out as the price.
Where Seamus is most common
Geography matters for names, and Seamus is no exception. In 2025 the states with the most Seamuss were MA (20), PA (17), NY (11), MI (9), OH (9). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Seamus
Statistically, parents drawn to Seamus tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Justus, Ulises, Ramses, Angus, and Marius.
JustusUlisesRamsesAngusMariusMatheusAndreasSlade
Rank history (last 25 years)
| Year | Babies named Seamus | Rank |
|---|---|---|
| 2025 | 154 | #1276 |
| 2024 | 125 | #1448 |
| 2023 | 137 | #1365 |
| 2022 | 143 | #1314 |
| 2021 | 158 | #1218 |
| 2020 | 161 | #1194 |
| 2019 | 197 | #1044 |
| 2018 | 178 | #1101 |
| 2017 | 211 | #977 |
| 2016 | 218 | #952 |
| 2015 | 221 | #946 |
| 2014 | 239 | #898 |
| 2013 | 247 | #862 |
| 2012 | 259 | #838 |
| 2011 | 258 | #836 |
| 2010 | 240 | #874 |
| 2009 | 276 | #806 |
| 2008 | 298 | #753 |
| 2007 | 296 | #751 |
| 2006 | 244 | #832 |
| 2005 | 254 | #776 |
| 2004 | 233 | #778 |
| 2003 | 248 | #734 |
| 2002 | 215 | #802 |
| 2001 | 188 | #852 |
Frequently asked questions
Is Seamus a popular boy name?
Seamus ranked #1279 among boys in 2025 with 154 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #946.
When was the name Seamus most popular?
Seamus peaked in 2008, when 298 American boys received the name (ranked #753 that year). Since 2008 the name has declined from that high.
How rare is the name Seamus?
In 2025, roughly 1 in 11,688 newborn American boys was named Seamus. It scores 67/100 on our uniqueness scale (rarity blended with momentum), which we classify as "rare".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.