How Many People Are Named Kielyn?
An estimated 95 people in the United States have the first name Kielyn. It is predominantly female (94.8%). The average bearer is 13 years old, and Kielyn peaked in popularity in 2009 with 18 births that year.
Below you will find a full statistical profile of Kielyn as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, state-by-state birth registrations, and, when available, a 2020 Census snapshot showing who had the name at that point in time. You can also check how many people share the full name Kielyn paired with any surname.
Key Insights
- Kielyn is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
95
About 1 in 3,607,940 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
94.8% confidence
Average Age
13
years old
Peak Year
2009
18 births
Total Registered
96
since 1880
Gender Distribution for Kielyn
Kielyn is predominantly female (94.8%), though 5 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Kielyn as a male name
Ranked #13,573 in 2009
5 male births in 2009
Peak: 2009 (5 births)
Kielyn as a female name
Ranked #14,498 in 2022
6 female births in 2022
Peak: 2009 (13 births)
Kielyn: Popularity Over Time
SSA records for Kielyn span from the 2000s to the 2020s, covering 3 decades of naming data. The most popular decade for this name was the 2010s, when 40 babies were registered. While Kielyn is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Kielyn by Decade
How has Kielyn 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.
Kielyn + Last Name Combinations
How many people share a full name with Kielyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kielyn
Other first names starting with K with a similar number of bearers.
Kielyn: Questions and Answers
How many people in the U.S. are named Kielyn?
We estimate approximately 95 people named Kielyn 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 3,607,940 Americans share this first name.
Is Kielyn a common name?
Kielyn is classified as "Very Rare" and is more popular than 63.8% of all first names in the SSA database. A total of 96 births have been registered with this name since 1880.
When was Kielyn most popular?
Kielyn reached peak popularity in 2009, when 18 babies were given this name. The average age of a living person named Kielyn is approximately 13 years old, reflecting when the name was most commonly given.
What does the SSA popularity chart show?
The popularity chart tracks birth registrations, not people currently alive. It shows how often Kielyn was given to babies from 1880 through 2024, which is why it is the best tool on the page for seeing long-run naming trends.
Is Kielyn a female name?
Kielyn is predominantly female. 94.8% of people with this name are female. See the gender breakdown above for full details.
Why can Kielyn have a lot of living bearers even if it is not trendy now?
Because a name can build up a large population over many decades. Kielyn peaked in 2009, and the average living bearer is about 13 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Kielyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kielyn Smith, Kielyn Johnson, Kielyn 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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