How Many People Are Named Katelynn?
An estimated 29,960 people in the United States have the first name Katelynn. It is almost exclusively a female name. The average bearer is 24 years old, and Katelynn peaked in popularity in 1998 with 1,457 births that year.
Below you will find a full statistical profile of Katelynn 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 Katelynn paired with any surname.
Key Insights
- Katelynn has fallen dramatically from its peak in the 2000s. Recent registrations are less than 5% of what they were at the name's height.
Estimated Living Americans
29,960
About 1 in 11,440 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
24
years old
Peak Year
1998
1,457 births
Total Registered
30,626
since 1880
Gender Distribution for Katelynn
Katelynn is almost exclusively a female name. Out of 30,626 total births registered, 100.0% were female.
Katelynn as a male name
Ranked #10,784 in 1999
5 male births in 1999
Peak: 1989 (6 births)
Katelynn as a female name
Ranked #2,287 in 2024
81 female births in 2024
Peak: 1998 (1,457 births)
Katelynn: Popularity Over Time
SSA records for Katelynn span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 12,198 babies were registered. Katelynn has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Katelynn by Decade
How has Katelynn 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.
Katelynn by State
Birth registrations for Katelynn span all 50 states and territories in the SSA database. The highest counts are in Texas, California, Ohio. The lowest are in Vermont, Hawaii, Delaware. On average, about 586 Katelynns were registered per state.
Katelynn + Last Name Combinations
How many people share a full name with Katelynn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Katelynn
Other first names starting with K with a similar number of bearers.
Katelynn: Questions and Answers
How many people in the U.S. are named Katelynn?
We estimate approximately 29,960 people named Katelynn 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 11,440 Americans share this first name.
Is Katelynn a common name?
Katelynn is classified as "Uncommon" and is more popular than 98.8% of all first names in the SSA database. A total of 30,626 births have been registered with this name since 1880.
When was Katelynn most popular?
Katelynn reached peak popularity in 1998, when 1,457 babies were given this name. The average age of a living person named Katelynn is approximately 24 years old, reflecting when the name was most commonly given.
Is Katelynn a female name?
Katelynn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Katelynn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Katelynn Smith, Katelynn Johnson, Katelynn 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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