How Many People Are Named Sienna Johnson?
There are approximately 241 people named Sienna Johnson living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,422,217 Americans.
This estimate combines SSA birth records for the first name Sienna with Census Bureau frequency data for the surname Johnson. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
241
1 in 1,422,217 Americans
Combination Rarity
Uncommon
First Name
View full profileSienna
Last Name
View full profileJohnson
Sienna: Popularity Over Time
Year-by-year SSA birth registrations for the first name Sienna. The peak year was 2024 with 2,113 births. The average person named Sienna today is 13 years old.
Ancestry of the Johnson Surname
Self-reported race and ethnicity breakdown for people with the surname Johnson, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Sienna" has an estimated frequency of 0.0107% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Johnson" appears at a rate of 655.24 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 241 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Sienna
Other people with the surname Johnson
Sienna Johnson: Questions and Answers
How many people are named Sienna Johnson?
We estimate approximately 241 people named Sienna Johnson are alive in the United States today. The first name Sienna is shared by 36,821 Americans, and the surname Johnson is shared by 2,200,907.
How rare is the name Sienna Johnson?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,422,217 Americans. The first name Sienna is uncommon and the surname Johnson is very common.
Is Sienna a male or female name?
Sienna is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 2024 and the average bearer today is 13 years old.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. Surname data comes from the 2010 U.S. Census Bureau. Full methodology.
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