How Many People Are Named Sebastian?
An estimated 204,231 people in the United States have the first name Sebastian. While not in the top 50, it remains a well-known name ranking #261 overall. It is almost exclusively a male name. The average bearer is 15 years old, and Sebastian peaked in popularity in 2016 with 10,324 births that year.
Below you will find a full statistical profile of Sebastian as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Sebastian paired with any surname.
Key Insights
- While Sebastian is overwhelmingly male, 398 female births have been registered with this name since 1880.
- Sebastian is a modern name. With an average bearer age of just 15, it has gained most of its popularity in recent years.
Estimated Living Americans
204,231
About 1 in 1,678 people in the U.S.
Rarity
Common
Predicted Gender
Male
99.8% confidence
Average Age
15
years old
Peak Year
2016
10,324 births
Total Registered
209,783
since 1880
Gender Distribution for Sebastian
Sebastian is almost exclusively a male name. Out of 209,783 total births registered, 99.8% were male.
Sebastian as a male name
Ranked #14 in 2024
8,562 male births in 2024
Peak: 2016 (10,308 births)
Sebastian as a female name
Ranked #6,338 in 2024
19 female births in 2024
Peak: 2004 (25 births)
Sebastian: Popularity Over Time
SSA records for Sebastian span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 86,796 babies were registered. While Sebastian is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Sebastian by Decade
How has Sebastian tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1880s | 34 | 34 | 0 | |
| 1890s | 43 | 43 | 0 | |
| 1900s | 89 | 89 | 0 | |
| 1910s | 838 | 838 | 0 | |
| 1920s | 1,231 | 1,231 | 0 | |
| 1930s | 774 | 774 | 0 | |
| 1940s | 574 | 574 | 0 | |
| 1950s | 500 | 500 | 0 | |
| 1960s | 1,116 | 1,116 | 0 | |
| 1970s | 1,414 | 1,414 | 0 | |
| 1980s | 2,857 | 2,840 | 17 | |
| 1990s | 14,663 | 14,598 | 65 | |
| 2000s | 54,000 | 53,865 | 135 | |
| 2010s | 86,796 | 86,673 | 123 | |
| 2020s | 44,854 | 44,796 | 58 | |
Sebastian by State
Birth registrations for Sebastian span all 51 states and territories in the SSA database. The highest counts are in California, Texas, Florida. The lowest are in Wyoming, Vermont, Montana. On average, about 4,046 Sebastians were registered per state.
Sebastian + Last Name Combinations
How many people share a full name with Sebastian as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sebastian
Other first names starting with S with a similar number of bearers.
Sebastian: Questions and Answers
How many people in the U.S. are named Sebastian?
We estimate approximately 204,231 people named Sebastian are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 1,678 Americans share this first name.
Is Sebastian a common name?
Sebastian is classified as "Common" and is more popular than 99.8% of all first names in the SSA database. A total of 209,783 births have been registered with this name since 1880.
When was Sebastian most popular?
Sebastian reached peak popularity in 2016, when 10,324 babies were given this name. The average age of a living person named Sebastian is approximately 15 years old, reflecting when the name was most commonly given.
Is Sebastian a male name?
Sebastian is predominantly male. 99.8% of people with this name are male. See the gender breakdown above for full details.
How many Sebastian Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sebastian Smith, Sebastian Johnson, Sebastian Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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