How Many People Are Named Kayo?
An estimated 263 people in the United States have the first name Kayo. It is predominantly male (98.2%). The average bearer is 15 years old, and Kayo peaked in popularity in 2009 with 20 births that year.
Below you will find a full statistical profile of Kayo 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 Kayo paired with any surname.
Estimated Living Americans
263
About 1 in 1,303,248 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
98.2% confidence
Average Age
15
years old
Peak Year
2009
20 births
Total Registered
273
since 1880
Gender Distribution for Kayo
Kayo is predominantly male (98.2%), though 5 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Kayo as a male name
Ranked #6,629 in 2024
13 male births in 2024
Peak: 2009 (20 births)
Kayo as a female name
Ranked #9,006 in 1973
5 female births in 1973
Peak: 1973 (5 births)
Kayo: Popularity Over Time
SSA records for Kayo span from the 1920s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 2010s, when 102 babies were registered. While Kayo is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Kayo by Decade
How has Kayo 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.
Kayo + Last Name Combinations
How many people share a full name with Kayo as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kayo
Other first names starting with K with a similar number of bearers.
Kayo: Questions and Answers
How many people in the U.S. are named Kayo?
We estimate approximately 263 people named Kayo 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 1,303,248 Americans share this first name.
Is Kayo a common name?
Kayo is classified as "Very Rare" and is more popular than 77.7% of all first names in the SSA database. A total of 273 births have been registered with this name since 1880.
When was Kayo most popular?
Kayo reached peak popularity in 2009, when 20 babies were given this name. The average age of a living person named Kayo is approximately 15 years old, reflecting when the name was most commonly given.
Is Kayo a male name?
Kayo is predominantly male. 98.2% of people with this name are male. See the gender breakdown above for full details.
How many Kayo Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kayo Smith, Kayo Johnson, Kayo 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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