How Many People Are Named Sibyl?
An estimated 1,119 people in the United States have the first name Sibyl. It is almost exclusively a female name. The average bearer is 58 years old, and Sibyl peaked in popularity in 1918 with 299 births that year.
Below you will find a full statistical profile of Sibyl 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 Sibyl paired with any surname.
Estimated Living Americans
1,119
About 1 in 306,304 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
58
years old
Peak Year
1918
299 births
Total Registered
4,441
since 1880
Gender Distribution for Sibyl
Sibyl is almost exclusively a female name. Out of 4,441 total births registered, 100.0% were female.
Sibyl as a female name
Ranked #9,438 in 2024
11 female births in 2024
Peak: 1918 (299 births)
Sibyl: Popularity Over Time
SSA records for Sibyl span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1910s, when 1,159 babies were registered. Sibyl has declined significantly from its peak in the 1910s. Recent registrations are a fraction of what they were at the name's height.
Sibyl by Decade
How has Sibyl 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.
Sibyl by State
Birth registrations for Sibyl span all 22 states and territories in the SSA database. The highest counts are in Texas, Arkansas, Georgia. The lowest are in New York, Kansas, California. On average, about 69 Sibyls were registered per state.
Sibyl + Last Name Combinations
How many people share a full name with Sibyl as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sibyl
Other first names starting with S with a similar number of bearers.
Sibyl: Questions and Answers
How many people in the U.S. are named Sibyl?
We estimate approximately 1,119 people named Sibyl 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 306,304 Americans share this first name.
Is Sibyl a common name?
Sibyl is classified as "Rare" and is more popular than 90.8% of all first names in the SSA database. A total of 4,441 births have been registered with this name since 1880.
When was Sibyl most popular?
Sibyl reached peak popularity in 1918, when 299 babies were given this name. The average age of a living person named Sibyl is approximately 58 years old, reflecting when the name was most commonly given.
Is Sibyl a female name?
Sibyl is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Sibyl Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sibyl Smith, Sibyl Johnson, Sibyl 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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