How Many People Are Named Katilyn?
An estimated 1,693 people in the United States have the first name Katilyn. It is almost exclusively a female name. The average bearer is 27 years old, and Katilyn peaked in popularity in 1998 with 101 births that year.
Below you will find a full statistical profile of Katilyn 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 Katilyn paired with any surname.
Estimated Living Americans
1,693
About 1 in 202,454 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
27
years old
Peak Year
1998
101 births
Total Registered
1,737
since 1880
Gender Distribution for Katilyn
Katilyn is almost exclusively a female name. Out of 1,737 total births registered, 100.0% were female.
Katilyn as a female name
Ranked #14,668 in 2019
6 female births in 2019
Peak: 1998 (101 births)
Katilyn: Popularity Over Time
SSA records for Katilyn span from the 1980s to the 2010s, covering 4 decades of naming data. The most popular decade for this name was the 1990s, when 799 babies were registered. Katilyn has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Katilyn by Decade
How has Katilyn 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.
Katilyn by State
Birth registrations for Katilyn span all 21 states and territories in the SSA database. The highest counts are in Ohio, Tennessee, Texas. The lowest are in Virginia, Louisiana, New Jersey. On average, about 22 Katilyns were registered per state.
Katilyn + Last Name Combinations
How many people share a full name with Katilyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Katilyn
Other first names starting with K with a similar number of bearers.
Katilyn: Questions and Answers
How many people in the U.S. are named Katilyn?
We estimate approximately 1,693 people named Katilyn 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 202,454 Americans share this first name.
Is Katilyn a common name?
Katilyn is classified as "Rare" and is more popular than 93% of all first names in the SSA database. A total of 1,737 births have been registered with this name since 1880.
When was Katilyn most popular?
Katilyn reached peak popularity in 1998, when 101 babies were given this name. The average age of a living person named Katilyn is approximately 27 years old, reflecting when the name was most commonly given.
Is Katilyn a female name?
Katilyn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Katilyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Katilyn Smith, Katilyn Johnson, Katilyn 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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