How Many People Are Named Kailynn?
An estimated 4,613 people in the United States have the first name Kailynn. It is almost exclusively a female name. The average bearer is 16 years old, and Kailynn peaked in popularity in 2011 with 290 births that year.
Below you will find a full statistical profile of Kailynn 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 Kailynn paired with any surname.
Key Insights
- Kailynn is a modern name. With an average bearer age of just 16, it has gained most of its popularity in recent years.
Estimated Living Americans
4,613
About 1 in 74,302 people in the U.S.
Rarity
Rare
Predicted Gender
Female
99.7% confidence
Average Age
16
years old
Peak Year
2011
290 births
Total Registered
4,669
since 1880
Gender Distribution for Kailynn
Kailynn is almost exclusively a female name. Out of 4,669 total births registered, 99.7% were female.
Kailynn as a male name
Ranked #9,332 in 2023
8 male births in 2023
Peak: 2023 (8 births)
Kailynn as a female name
Ranked #2,042 in 2024
95 female births in 2024
Peak: 2011 (290 births)
Kailynn: Popularity Over Time
SSA records for Kailynn span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 2010s, when 2,129 babies were registered. Kailynn has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Kailynn by Decade
How has Kailynn 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.
Kailynn by State
Birth registrations for Kailynn span all 35 states and territories in the SSA database. The highest counts are in Texas, California, Florida. The lowest are in West Virginia, Utah, Nevada. On average, about 83 Kailynns were registered per state.
Kailynn + Last Name Combinations
How many people share a full name with Kailynn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kailynn
Other first names starting with K with a similar number of bearers.
Kailynn: Questions and Answers
How many people in the U.S. are named Kailynn?
We estimate approximately 4,613 people named Kailynn 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 74,302 Americans share this first name.
Is Kailynn a common name?
Kailynn is classified as "Rare" and is more popular than 96.4% of all first names in the SSA database. A total of 4,669 births have been registered with this name since 1880.
When was Kailynn most popular?
Kailynn reached peak popularity in 2011, when 290 babies were given this name. The average age of a living person named Kailynn is approximately 16 years old, reflecting when the name was most commonly given.
Is Kailynn a female name?
Kailynn is predominantly female. 99.7% of people with this name are female. See the gender breakdown above for full details.
How many Kailynn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kailynn Smith, Kailynn Johnson, Kailynn 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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