How Many People Are Named Kaidyn?
An estimated 3,945 people in the United States have the first name Kaidyn. It is used for both genders, with 67.1% male. The average bearer is 13 years old, and Kaidyn peaked in popularity in 2012 with 278 births that year.
Below you will find a full statistical profile of Kaidyn 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 Kaidyn paired with any surname.
Key Insights
- Kaidyn is a modern name. With an average bearer age of just 13, it has gained most of its popularity in recent years.
Estimated Living Americans
3,945
About 1 in 86,883 people in the U.S.
Rarity
Rare
Predicted Gender
Male
67.1% confidence
Average Age
13
years old
Peak Year
2012
278 births
Total Registered
3,980
since 1880
Gender Distribution for Kaidyn
Kaidyn is a genuinely unisex name, used for both males (67.1%) and females (32.9%). Out of 3,980 total births registered, 2,671 were male and 1,309 were female.
Kaidyn as a male name
Ranked #1,958 in 2024
80 male births in 2024
Peak: 2014 (190 births)
Kaidyn as a female name
Ranked #7,054 in 2024
16 female births in 2024
Peak: 2009 (109 births)
Kaidyn: Popularity Over Time
SSA records for Kaidyn span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2010s, when 2,225 babies were registered. Kaidyn has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Kaidyn by Decade
How has Kaidyn 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.
Kaidyn by State
Birth registrations for Kaidyn span all 29 states and territories in the SSA database. The highest counts are in Texas, Florida, California. The lowest are in Oregon, Nebraska, Minnesota. On average, about 63 Kaidyns were registered per state.
Kaidyn + Last Name Combinations
How many people share a full name with Kaidyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kaidyn
Other first names starting with K with a similar number of bearers.
Kaidyn: Questions and Answers
How many people in the U.S. are named Kaidyn?
We estimate approximately 3,945 people named Kaidyn 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 86,883 Americans share this first name.
Is Kaidyn a common name?
Kaidyn is classified as "Rare" and is more popular than 96% of all first names in the SSA database. A total of 3,980 births have been registered with this name since 1880.
When was Kaidyn most popular?
Kaidyn reached peak popularity in 2012, when 278 babies were given this name. The average age of a living person named Kaidyn is approximately 13 years old, reflecting when the name was most commonly given.
Is Kaidyn a male name?
Kaidyn is predominantly male. 67.1% of people with this name are male. See the gender breakdown above for full details.
How many Kaidyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kaidyn Smith, Kaidyn Johnson, Kaidyn 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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