How Many People Are Named Sinai?
An estimated 2,419 people in the United States have the first name Sinai. It is predominantly female (90.2%). The average bearer is 16 years old, and Sinai peaked in popularity in 2009 with 115 births that year.
Below you will find a full statistical profile of Sinai 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 Sinai paired with any surname.
Key Insights
- Sinai is a modern name. With an average bearer age of just 16, it has gained most of its popularity in recent years.
Estimated Living Americans
2,419
About 1 in 141,693 people in the U.S.
Rarity
Rare
Predicted Gender
Female
90.2% confidence
Average Age
16
years old
Peak Year
2009
115 births
Total Registered
2,449
since 1880
Gender Distribution for Sinai
Sinai is predominantly female (90.2%), though 240 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Sinai as a male name
Ranked #6,396 in 2024
14 male births in 2024
Peak: 2022 (16 births)
Sinai as a female name
Ranked #2,422 in 2024
75 female births in 2024
Peak: 2023 (103 births)
Sinai: Popularity Over Time
SSA records for Sinai span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 2000s, when 864 babies were registered. While Sinai is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Sinai by Decade
How has Sinai 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.
Sinai by State
Birth registrations for Sinai span all 13 states and territories in the SSA database. The highest counts are in California, Texas, Florida. The lowest are in South Carolina, Oregon, Illinois. On average, about 89 Sinais were registered per state.
Sinai + Last Name Combinations
How many people share a full name with Sinai as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sinai
Other first names starting with S with a similar number of bearers.
Sinai: Questions and Answers
How many people in the U.S. are named Sinai?
We estimate approximately 2,419 people named Sinai 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 141,693 Americans share this first name.
Is Sinai a common name?
Sinai is classified as "Rare" and is more popular than 94.4% of all first names in the SSA database. A total of 2,449 births have been registered with this name since 1880.
When was Sinai most popular?
Sinai reached peak popularity in 2009, when 115 babies were given this name. The average age of a living person named Sinai is approximately 16 years old, reflecting when the name was most commonly given.
Is Sinai a female name?
Sinai is predominantly female. 90.2% of people with this name are female. See the gender breakdown above for full details.
How many Sinai Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sinai Smith, Sinai Johnson, Sinai 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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