How Many People Are Named Katlyn?
An estimated 17,899 people in the United States have the first name Katlyn. It is almost exclusively a female name. The average bearer is 29 years old, and Katlyn peaked in popularity in 1995 with 1,260 births that year.
Below you will find a full statistical profile of Katlyn 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 Katlyn paired with any surname.
Key Insights
- Katlyn has fallen dramatically from its peak in the 1990s. Recent registrations are less than 5% of what they were at the name's height.
Estimated Living Americans
17,899
About 1 in 19,149 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
29
years old
Peak Year
1995
1,260 births
Total Registered
18,426
since 1880
Gender Distribution for Katlyn
Katlyn is almost exclusively a female name. Out of 18,426 total births registered, 100.0% were female.
Katlyn as a male name
Ranked #8,572 in 1989
5 male births in 1989
Peak: 1989 (5 births)
Katlyn as a female name
Ranked #5,504 in 2024
23 female births in 2024
Peak: 1995 (1,260 births)
Katlyn: Popularity Over Time
SSA records for Katlyn span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 1990s, when 10,718 babies were registered. Katlyn has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Katlyn by Decade
How has Katlyn 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.
Katlyn by State
Birth registrations for Katlyn span all 48 states and territories in the SSA database. The highest counts are in Texas, Ohio, Pennsylvania. The lowest are in Rhode Island, Alaska, Montana. On average, about 355 Katlyns were registered per state.
Katlyn + Last Name Combinations
How many people share a full name with Katlyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Katlyn
Other first names starting with K with a similar number of bearers.
Katlyn: Questions and Answers
How many people in the U.S. are named Katlyn?
We estimate approximately 17,899 people named Katlyn 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 19,149 Americans share this first name.
Is Katlyn a common name?
Katlyn is classified as "Uncommon" and is more popular than 98.4% of all first names in the SSA database. A total of 18,426 births have been registered with this name since 1880.
When was Katlyn most popular?
Katlyn reached peak popularity in 1995, when 1,260 babies were given this name. The average age of a living person named Katlyn is approximately 29 years old, reflecting when the name was most commonly given.
Is Katlyn a female name?
Katlyn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Katlyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Katlyn Smith, Katlyn Johnson, Katlyn 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.
Search for a full name combination
How Many of Me