How Many People Are Named Sydni Johnson?
There are approximately 34 people named Sydni Johnson living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 10,081,010 Americans.
This estimate combines SSA birth records for the first name Sydni 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
34
1 in 10,081,010 Americans
Combination Rarity
Rare
First Name
View full profileSydni
Last Name
View full profileJohnson
Sydni: Popularity Over Time
Year-by-year SSA birth registrations for the first name Sydni. The peak year was 2000 with 468 births. The average person named Sydni today is 25 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 "Sydni" has an estimated frequency of < 0.0001% 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 34 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Sydni
Other people with the surname Johnson
Sydni Johnson: Questions and Answers
How many people are named Sydni Johnson?
We estimate approximately 34 people named Sydni Johnson are alive in the United States today. The first name Sydni is shared by 5,231 Americans, and the surname Johnson is shared by 2,200,907.
How rare is the name Sydni Johnson?
This name combination is classified as Rare, occurring at a rate of about 1 in 10,081,010 Americans. The first name Sydni is rare and the surname Johnson is very common.
Is Sydni a male or female name?
Sydni is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 2000 and the average bearer today is 25 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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