How Many People Are Named Kailin?
An estimated 1,367 people in the United States have the first name Kailin. It is used for both genders, with 86.5% female. The average bearer is 22 years old, and Kailin peaked in popularity in 2000 with 66 births that year.
Below you will find a full statistical profile of Kailin 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 Kailin paired with any surname.
Estimated Living Americans
1,367
About 1 in 250,735 people in the U.S.
Rarity
Rare
Predicted Gender
Female
86.5% confidence
Average Age
22
years old
Peak Year
2000
66 births
Total Registered
1,395
since 1880
Gender Distribution for Kailin
Kailin is predominantly female (86.5%), though 189 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Kailin as a male name
Ranked #10,350 in 2024
7 male births in 2024
Peak: 1994 (10 births)
Kailin as a female name
Ranked #6,756 in 2024
17 female births in 2024
Peak: 1997 (57 births)
Kailin: Popularity Over Time
SSA records for Kailin span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 2000s, when 498 babies were registered. Kailin has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Kailin by Decade
How has Kailin 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.
Kailin by State
Birth registrations for Kailin span all 7 states and territories in the SSA database. The highest counts are in California, New York, Pennsylvania. The lowest are in Texas, Indiana, Illinois. On average, about 16 Kailins were registered per state.
Kailin + Last Name Combinations
How many people share a full name with Kailin as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kailin
Other first names starting with K with a similar number of bearers.
Kailin: Questions and Answers
How many people in the U.S. are named Kailin?
We estimate approximately 1,367 people named Kailin 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 250,735 Americans share this first name.
Is Kailin a common name?
Kailin is classified as "Rare" and is more popular than 91.9% of all first names in the SSA database. A total of 1,395 births have been registered with this name since 1880.
When was Kailin most popular?
Kailin reached peak popularity in 2000, when 66 babies were given this name. The average age of a living person named Kailin is approximately 22 years old, reflecting when the name was most commonly given.
Is Kailin a female name?
Kailin is predominantly female. 86.5% of people with this name are female. See the gender breakdown above for full details.
How many Kailin Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kailin Smith, Kailin Johnson, Kailin 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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