How Many People Are Named Kajsa?
An estimated 390 people in the United States have the first name Kajsa. It is almost exclusively a female name. The average bearer is 25 years old, and Kajsa peaked in popularity in 2010 with 18 births that year.
Below you will find a full statistical profile of Kajsa 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 Kajsa paired with any surname.
Estimated Living Americans
390
About 1 in 878,857 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
25
years old
Peak Year
2010
18 births
Total Registered
401
since 1880
Gender Distribution for Kajsa
Kajsa is almost exclusively a female name. Out of 401 total births registered, 100.0% were female.
Kajsa as a female name
Ranked #10,626 in 2024
9 female births in 2024
Peak: 2010 (18 births)
Kajsa: Popularity Over Time
SSA records for Kajsa span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 119 babies were registered. Kajsa has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Kajsa by Decade
How has Kajsa 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.
Kajsa + Last Name Combinations
How many people share a full name with Kajsa as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kajsa
Other first names starting with K with a similar number of bearers.
Kajsa: Questions and Answers
How many people in the U.S. are named Kajsa?
We estimate approximately 390 people named Kajsa 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 878,857 Americans share this first name.
Is Kajsa a common name?
Kajsa is classified as "Very Rare" and is more popular than 82.1% of all first names in the SSA database. A total of 401 births have been registered with this name since 1880.
When was Kajsa most popular?
Kajsa reached peak popularity in 2010, when 18 babies were given this name. The average age of a living person named Kajsa is approximately 25 years old, reflecting when the name was most commonly given.
Is Kajsa a female name?
Kajsa is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Kajsa Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kajsa Smith, Kajsa Johnson, Kajsa 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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