How Many People Are Named Kao?
An estimated 684 people in the United States have the first name Kao. It is used for both genders, with 65.7% male. The average bearer is 35 years old, and Kao peaked in popularity in 1981 with 54 births that year.
Below you will find a full statistical profile of Kao 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 Kao paired with any surname.
Estimated Living Americans
684
About 1 in 501,103 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
65.7% confidence
Average Age
35
years old
Peak Year
1981
54 births
Total Registered
711
since 1880
Gender Distribution for Kao
Kao is a genuinely unisex name, used for both males (65.7%) and females (34.3%). Out of 711 total births registered, 467 were male and 244 were female.
Kao as a male name
Ranked #13,186 in 2023
5 male births in 2023
Peak: 1981 (40 births)
Kao as a female name
Ranked #14,007 in 2000
6 female births in 2000
Peak: 1991 (24 births)
Kao: Popularity Over Time
SSA records for Kao span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 1980s, when 364 babies were registered. Kao has declined significantly from its peak in the 1980s. Recent registrations are a fraction of what they were at the name's height.
Kao by Decade
How has Kao 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.
Kao by State
Birth registrations for Kao span all 5 states and territories in the SSA database. The highest counts are in California, Minnesota, Wisconsin. The lowest are in Washington, Oregon, Wisconsin. On average, about 73 Kaos were registered per state.
Kao + Last Name Combinations
How many people share a full name with Kao as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kao
Other first names starting with K with a similar number of bearers.
Kao: Questions and Answers
How many people in the U.S. are named Kao?
We estimate approximately 684 people named Kao 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 501,103 Americans share this first name.
Is Kao a common name?
Kao is classified as "Very Rare" and is more popular than 87.4% of all first names in the SSA database. A total of 711 births have been registered with this name since 1880.
When was Kao most popular?
Kao reached peak popularity in 1981, when 54 babies were given this name. The average age of a living person named Kao is approximately 35 years old, reflecting when the name was most commonly given.
Is Kao a male name?
Kao is predominantly male. 65.7% of people with this name are male. See the gender breakdown above for full details.
How many Kao Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kao Smith, Kao Johnson, Kao 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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