Seamus vs Sean

Side-by-side comparison of Seamus and Sean - popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Seamus

Boy name · Rank #1451

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Name B

Sean

Boy name · Rank #435

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Which name is more popular?

Metric Seamus Sean
Current Rank #1451 #435
Total Births (all years) 7,809 423,637
Peak Year 2008 1990
Peak Year Births 298 12,018
Peak Decade 2000s 1980s
Gender Boy Boy
First Recorded Year 1957 1925

Births by Decade

Decade Seamus Sean
1920s - 12
1930s - 101
1940s - 659
1950s 25 5,452
1960s 122 47,282
1970s 332 83,819
1980s 497 103,870
1990s 1,241 92,003
2000s 2,446 64,133
2010s 2,268 21,540
2020s 878 4,766

Recent Annual Births (2014–present)

Year Seamus Sean
2014 239 2,125
2015 221 1,895
2016 218 1,671
2017 211 1,481
2018 178 1,325
2019 197 1,128
2020 161 976
2021 158 900
2022 143 803
2023 137 741
2024 125 730
2025 154 616

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1957–2025.

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