How Many People Are Named Kayleen?
An estimated 7,436 people in the United States have the first name Kayleen. It is almost exclusively a female name. The average bearer is 27 years old, and Kayleen peaked in popularity in 2010 with 284 births that year.
Below you will find a full statistical profile of Kayleen 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 Kayleen paired with any surname.
Estimated Living Americans
7,436
About 1 in 46,094 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
27
years old
Peak Year
2010
284 births
Total Registered
7,925
since 1880
Gender Distribution for Kayleen
Kayleen is almost exclusively a female name. Out of 7,925 total births registered, 100.0% were female.
Kayleen as a female name
Ranked #2,565 in 2024
69 female births in 2024
Peak: 2010 (284 births)
Kayleen: Popularity Over Time
SSA records for Kayleen span from the 1930s to the 2020s, covering 10 decades of naming data. The most popular decade for this name was the 2000s, when 1,966 babies were registered. While Kayleen is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Kayleen by Decade
How has Kayleen 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.
Kayleen by State
Birth registrations for Kayleen span all 30 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in Wisconsin, Tennessee, Missouri. On average, about 150 Kayleens were registered per state.
Kayleen + Last Name Combinations
How many people share a full name with Kayleen as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kayleen
Other first names starting with K with a similar number of bearers.
Kayleen: Questions and Answers
How many people in the U.S. are named Kayleen?
We estimate approximately 7,436 people named Kayleen 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 46,094 Americans share this first name.
Is Kayleen a common name?
Kayleen is classified as "Rare" and is more popular than 97.3% of all first names in the SSA database. A total of 7,925 births have been registered with this name since 1880.
When was Kayleen most popular?
Kayleen reached peak popularity in 2010, when 284 babies were given this name. The average age of a living person named Kayleen is approximately 27 years old, reflecting when the name was most commonly given.
Is Kayleen a female name?
Kayleen is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Kayleen Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kayleen Smith, Kayleen Johnson, Kayleen 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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