How Many People Are Named Seth?
An estimated 157,417 people in the United States have the first name Seth. While not in the top 50, it remains a well-known name ranking #338 overall. It is almost exclusively a male name. The average bearer is 31 years old, and Seth peaked in popularity in 2000 with 6,725 births that year.
Below you will find a full statistical profile of Seth 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 Seth paired with any surname.
Key Insights
- While Seth is overwhelmingly male, 495 female births have been registered with this name since 1880.
Estimated Living Americans
157,417
About 1 in 2,177 people in the U.S.
Rarity
Common
Predicted Gender
Male
99.7% confidence
Average Age
31
years old
Peak Year
2000
6,725 births
Total Registered
165,768
since 1880
Gender Distribution for Seth
Seth is almost exclusively a male name. Out of 165,768 total births registered, 99.7% were male.
Seth as a male name
Ranked #558 in 2024
530 male births in 2024
Peak: 2000 (6,717 births)
Seth as a female name
Ranked #18,798 in 2014
5 female births in 2014
Peak: 1981 (33 births)
Seth: Popularity Over Time
SSA records for Seth span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2000s, when 48,259 babies were registered. Seth has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Seth by Decade
How has Seth 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 | 270 | 270 | 0 | |
| 1890s | 168 | 168 | 0 | |
| 1900s | 181 | 181 | 0 | |
| 1910s | 642 | 642 | 0 | |
| 1920s | 874 | 874 | 0 | |
| 1930s | 612 | 612 | 0 | |
| 1940s | 852 | 852 | 0 | |
| 1950s | 2,101 | 2,101 | 0 | |
| 1960s | 3,792 | 3,787 | 5 | |
| 1970s | 16,671 | 16,586 | 85 | |
| 1980s | 31,318 | 31,129 | 189 | |
| 1990s | 42,312 | 42,209 | 103 | |
| 2000s | 48,259 | 48,161 | 98 | |
| 2010s | 14,683 | 14,668 | 15 | |
| 2020s | 3,033 | 3,033 | 0 | |
Seth by State
Birth registrations for Seth span all 51 states and territories in the SSA database. The highest counts are in California, Texas, Ohio. The lowest are in Delaware, District of Columbia, Wyoming. On average, about 3,162 Seths were registered per state.
Seth + Last Name Combinations
How many people share a full name with Seth as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Seth
Other first names starting with S with a similar number of bearers.
Seth: Questions and Answers
How many people in the U.S. are named Seth?
We estimate approximately 157,417 people named Seth 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 2,177 Americans share this first name.
Is Seth a common name?
Seth is classified as "Common" and is more popular than 99.7% of all first names in the SSA database. A total of 165,768 births have been registered with this name since 1880.
When was Seth most popular?
Seth reached peak popularity in 2000, when 6,725 babies were given this name. The average age of a living person named Seth is approximately 31 years old, reflecting when the name was most commonly given.
Is Seth a male name?
Seth is predominantly male. 99.7% of people with this name are male. See the gender breakdown above for full details.
How many Seth Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Seth Smith, Seth Johnson, Seth 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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