How Many People Are Named Siena?
An estimated 10,475 people in the United States have the first name Siena. It is almost exclusively a female name. The average bearer is 14 years old, and Siena peaked in popularity in 2018 with 496 births that year.
Below you will find a full statistical profile of Siena 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 Siena paired with any surname.
Key Insights
- Siena is a modern name. With an average bearer age of just 14, it has gained most of its popularity in recent years.
Estimated Living Americans
10,475
About 1 in 32,721 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
14
years old
Peak Year
2018
496 births
Total Registered
10,590
since 1880
Gender Distribution for Siena
Siena is almost exclusively a female name. Out of 10,590 total births registered, 100.0% were female.
Siena as a female name
Ranked #631 in 2024
467 female births in 2024
Peak: 2018 (496 births)
Siena: Popularity Over Time
SSA records for Siena span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 2010s, when 4,589 babies were registered. While Siena is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Siena by Decade
How has Siena 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.
Siena by State
Birth registrations for Siena span all 32 states and territories in the SSA database. The highest counts are in California, New York, Florida. The lowest are in New Mexico, South Carolina, Kansas. On average, about 282 Sienas were registered per state.
Siena + Last Name Combinations
How many people share a full name with Siena as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Siena
Other first names starting with S with a similar number of bearers.
Siena: Questions and Answers
How many people in the U.S. are named Siena?
We estimate approximately 10,475 people named Siena 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 32,721 Americans share this first name.
Is Siena a common name?
Siena is classified as "Uncommon" and is more popular than 97.8% of all first names in the SSA database. A total of 10,590 births have been registered with this name since 1880.
When was Siena most popular?
Siena reached peak popularity in 2018, when 496 babies were given this name. The average age of a living person named Siena is approximately 14 years old, reflecting when the name was most commonly given.
Is Siena a female name?
Siena is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Siena Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Siena Smith, Siena Johnson, Siena 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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