Boys' name · peaked in 2018
Sebastian name popularity since 1925
216,796 babies born in the US from 1925 to 2025 were named Sebastian. Half of them were born in 2014 or earlier, so the typical Sebastian is about 12 years old in 2026. Sebastian peaked in 2018 as the #18 name for boys, and it ranked #16 in 2025.
Key facts
- US babies since 1925
- 216,796
- Named Sebastian, 1925–2025
- In 2025
- #16
- for boys in 2025 (8,605 babies)
- Girls / boys
- 99.8% boys
- 408 girls · 216,388 boys
- Most popular in
- Nevada
- 3.56× its national share
Peak year is the year Sebastian made up the largest share of US boys, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.
Sebastian births per year, 1925–2025
The biggest year by count was 2016. Measured as a share of all babies, Sebastian peaked in 2018.
- Fastest rise: Between 1987 and 1992, Sebastian became 3.4× more common, from 1 in 5,270 baby boys to 1 in 1,540.
Shaded on the chart. This compares Sebastian's share of all US boys five years apart, counting only years with at least 100 babies named Sebastian.
Decade by decade
Babies named Sebastian in each decade, and its rank among boys' names in the middle year of the decade (1935, 1945 … 2025).
| Decade | Girls | Boys | Rank |
|---|---|---|---|
| 1925–29 | 0 | 568 | – |
| 1930s | 0 | 774 | #676 |
| 1940s | 0 | 574 | #951 |
| 1950s | 0 | 500 | #1,009 |
| 1960s | 0 | 1,113 | #731 |
| 1970s | 0 | 1,413 | #739 |
| 1980s | 17 | 2,839 | #515 |
| 1990s | 65 | 14,599 | #207 |
| 2000s | 135 | 53,866 | #86 |
| 2010s | 123 | 86,688 | #35 |
| 2020–25 | 68 | 53,454 | #16 |
Ranks count every name given to at least 5 boys that year, so they can go past 1,000.
Generation fingerprint
55.6% of babies named Sebastian from 1925 to 2025 were born in the Gen Alpha years (2013–2025). The full split by generation:
Where Sebastian is most popular
The index compares Sebastian's share of babies in each state with its share nationwide, 1925–2025 (1.50× = 50% more common). States with at least 300 babies named Sebastian.
| State | Index | Babies |
|---|---|---|
| Nevada | 3.56× | 2,745 |
| Arizona | 2.54× | 7,112 |
| Florida | 2.34× | 18,289 |
| California | 2.04× | 46,685 |
| Texas | 2.03× | 34,443 |
Other spellings
Spellings that sound like Sebastian and were given to at least 1,000 boys from 1925 to 2025, with the year each one was most popular.
| Spelling | Boys | Peak year |
|---|---|---|
| Sebastian (this page) | 216,388 | 2018 |
| Sebastien | 4,057 | 2007 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Sebastian's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Sebastian.
Names from the same era
Other common names that peaked within two years of Sebastian (2018).
Source: U.S. Social Security Administration national and state baby-name data, which covers names given to at least 5 babies of one sex in a year. About the data