How Many People Are Named Seneca?
An estimated 3,335 people in the United States have the first name Seneca. It is used for both genders, with 50.1% male. The average bearer is 31 years old, and Seneca peaked in popularity in 1977 with 219 births that year.
Below you will find a full statistical profile of Seneca 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 Seneca paired with any surname.
Key Insights
- Seneca is a genuinely unisex name, given to both boys and girls in roughly equal numbers.
Estimated Living Americans
3,335
About 1 in 102,775 people in the U.S.
Rarity
Rare
Predicted Gender
Male
50.1% confidence
Average Age
31
years old
Peak Year
1977
219 births
Total Registered
3,473
since 1880
Gender Distribution for Seneca
Seneca is a genuinely unisex name, used for both males (50.1%) and females (49.9%). Out of 3,473 total births registered, 1,741 were male and 1,732 were female.
Seneca as a male name
Ranked #4,838 in 2024
21 male births in 2024
Peak: 1977 (179 births)
Seneca as a female name
Ranked #5,258 in 2024
25 female births in 2024
Peak: 1995 (53 births)
Seneca: Popularity Over Time
SSA records for Seneca span from the 1950s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 1980s, when 779 babies were registered. While Seneca is less common than at its peak in the 1980s, it remains a well-established name with steady registrations.
Seneca by Decade
How has Seneca 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.
Seneca by State
Birth registrations for Seneca span all 20 states and territories in the SSA database. The highest counts are in Illinois, California, Texas. The lowest are in Indiana, Arizona, Oklahoma. On average, about 34 Senecas were registered per state.
Seneca + Last Name Combinations
How many people share a full name with Seneca as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Seneca
Other first names starting with S with a similar number of bearers.
Seneca: Questions and Answers
How many people in the U.S. are named Seneca?
We estimate approximately 3,335 people named Seneca 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 102,775 Americans share this first name.
Is Seneca a common name?
Seneca is classified as "Rare" and is more popular than 95.5% of all first names in the SSA database. A total of 3,473 births have been registered with this name since 1880.
When was Seneca most popular?
Seneca reached peak popularity in 1977, when 219 babies were given this name. The average age of a living person named Seneca is approximately 31 years old, reflecting when the name was most commonly given.
Is Seneca a male name?
Seneca is predominantly male. 50.1% of people with this name are male. See the gender breakdown above for full details.
How many Seneca Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Seneca Smith, Seneca Johnson, Seneca 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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