How Many People Are Named Kathalyn?
An estimated 14 people in the United States have the first name Kathalyn. It is almost exclusively a female name. The average bearer is 77 years old, and Kathalyn peaked in popularity in 1945 with 7 births that year.
Below you will find a full statistical profile of Kathalyn 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 Kathalyn paired with any surname.
Key Insights
- With an average bearer age of 77, Kathalyn is a vintage name most associated with earlier generations. Most living bearers were born before 1959.
- Kathalyn is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
14
About 1 in 24,482,453 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
77
years old
Peak Year
1945
7 births
Total Registered
29
since 1880
Gender Distribution for Kathalyn
Kathalyn is almost exclusively a female name. Out of 29 total births registered, 100.0% were female.
Kathalyn as a female name
Ranked #5,435 in 1954
6 female births in 1954
Peak: 1945 (7 births)
Kathalyn: Popularity Over Time
SSA records for Kathalyn span from the 1910s to the 1950s, covering 3 decades of naming data. The most popular decade for this name was the 1940s, when 13 babies were registered. Kathalyn remains highly popular today, with recent registration numbers near its historical peak.
Kathalyn by Decade
How has Kathalyn 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.
Kathalyn + Last Name Combinations
How many people share a full name with Kathalyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kathalyn
Other first names starting with K with a similar number of bearers.
Kathalyn: Questions and Answers
How many people in the U.S. are named Kathalyn?
We estimate approximately 14 people named Kathalyn 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 24,482,453 Americans share this first name.
Is Kathalyn a common name?
Kathalyn is classified as "Very Rare" and is more popular than 34% of all first names in the SSA database. A total of 29 births have been registered with this name since 1880.
When was Kathalyn most popular?
Kathalyn reached peak popularity in 1945, when 7 babies were given this name. The average age of a living person named Kathalyn is approximately 77 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 Kathalyn 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 Kathalyn a female name?
Kathalyn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
Why can Kathalyn 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. Kathalyn peaked in 1945, and the average living bearer is about 77 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Kathalyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kathalyn Smith, Kathalyn Johnson, Kathalyn 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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