How Many People Are Named Sierra?
An estimated 97,738 people in the United States have the first name Sierra. It is almost exclusively a female name. The average bearer is 26 years old, and Sierra peaked in popularity in 1998 with 5,853 births that year.
Below you will find a full statistical profile of Sierra 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 Sierra paired with any surname.
Key Insights
- While Sierra is overwhelmingly female, 269 male births have been registered with this name since 1880.
Estimated Living Americans
97,738
About 1 in 3,507 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
99.7% confidence
Average Age
26
years old
Peak Year
1998
5,853 births
Total Registered
100,380
since 1880
Gender Distribution for Sierra
Sierra is almost exclusively a female name. Out of 100,380 total births registered, 99.7% were female.
Sierra as a male name
Ranked #13,721 in 2006
5 male births in 2006
Peak: 1994 (18 births)
Sierra as a female name
Ranked #596 in 2024
505 female births in 2024
Peak: 1998 (5,841 births)
Sierra: Popularity Over Time
SSA records for Sierra span from the 1940s to the 2020s, covering 9 decades of naming data. The most popular decade for this name was the 1990s, when 43,746 babies were registered. Sierra has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Sierra by Decade
How has Sierra 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.
Sierra by State
Birth registrations for Sierra span all 51 states and territories in the SSA database. The highest counts are in California, Texas, Florida. The lowest are in Rhode Island, District of Columbia, Delaware. On average, about 1,935 Sierras were registered per state.
Sierra + Last Name Combinations
How many people share a full name with Sierra as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sierra
Other first names starting with S with a similar number of bearers.
Sierra: Questions and Answers
How many people in the U.S. are named Sierra?
We estimate approximately 97,738 people named Sierra 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 3,507 Americans share this first name.
Is Sierra a common name?
Sierra is classified as "Uncommon" and is more popular than 99.5% of all first names in the SSA database. A total of 100,380 births have been registered with this name since 1880.
When was Sierra most popular?
Sierra reached peak popularity in 1998, when 5,853 babies were given this name. The average age of a living person named Sierra is approximately 26 years old, reflecting when the name was most commonly given.
Is Sierra a female name?
Sierra is predominantly female. 99.7% of people with this name are female. See the gender breakdown above for full details.
How many Sierra Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sierra Smith, Sierra Johnson, Sierra 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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