How Many People Are Named Katlynn?
An estimated 3,875 people in the United States have the first name Katlynn. It is almost exclusively a female name. The average bearer is 27 years old, and Katlynn peaked in popularity in 1999 with 268 births that year.
Below you will find a full statistical profile of Katlynn 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 Katlynn paired with any surname.
Estimated Living Americans
3,875
About 1 in 88,453 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
27
years old
Peak Year
1999
268 births
Total Registered
3,975
since 1880
Gender Distribution for Katlynn
Katlynn is almost exclusively a female name. Out of 3,975 total births registered, 100.0% were female.
Katlynn as a female name
Ranked #14,269 in 2023
6 female births in 2023
Peak: 1999 (268 births)
Katlynn: Popularity Over Time
SSA records for Katlynn span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 1990s, when 2,075 babies were registered. Katlynn has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Katlynn by Decade
How has Katlynn 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.
Katlynn by State
Birth registrations for Katlynn span all 34 states and territories in the SSA database. The highest counts are in Texas, Ohio, California. The lowest are in Utah, Oregon, Connecticut. On average, about 74 Katlynns were registered per state.
Katlynn + Last Name Combinations
How many people share a full name with Katlynn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Katlynn
Other first names starting with K with a similar number of bearers.
Katlynn: Questions and Answers
How many people in the U.S. are named Katlynn?
We estimate approximately 3,875 people named Katlynn 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 88,453 Americans share this first name.
Is Katlynn a common name?
Katlynn is classified as "Rare" and is more popular than 95.9% of all first names in the SSA database. A total of 3,975 births have been registered with this name since 1880.
When was Katlynn most popular?
Katlynn reached peak popularity in 1999, when 268 babies were given this name. The average age of a living person named Katlynn is approximately 27 years old, reflecting when the name was most commonly given.
Is Katlynn a female name?
Katlynn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Katlynn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Katlynn Smith, Katlynn Johnson, Katlynn 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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