How Many People Are Named Kairo?
An estimated 9,831 people in the United States have the first name Kairo. It is predominantly male (97.4%). The average bearer is 6 years old, and Kairo peaked in popularity in 2023 with 1,534 births that year.
Below you will find a full statistical profile of Kairo 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 Kairo paired with any surname.
Key Insights
- While Kairo is overwhelmingly male, 261 female births have been registered with this name since 1880.
- Kairo is a modern name. With an average bearer age of just 6, it has gained most of its popularity in recent years.
- Kairo is experiencing a surge in popularity, with recent registrations more than doubling compared to the previous decade.
Estimated Living Americans
9,831
About 1 in 34,865 people in the U.S.
Rarity
Rare
Predicted Gender
Male
97.4% confidence
Average Age
6
years old
Peak Year
2023
1,534 births
Total Registered
9,898
since 1880
Gender Distribution for Kairo
Kairo is predominantly male (97.4%), though 261 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Kairo as a male name
Ranked #238 in 2024
1,478 male births in 2024
Peak: 2023 (1,488 births)
Kairo as a female name
Ranked #3,991 in 2024
37 female births in 2024
Peak: 2019 (48 births)
Kairo: Popularity Over Time
SSA records for Kairo span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2020s, when 7,073 babies were registered. Kairo remains highly popular today, with recent registration numbers near its historical peak.
Kairo by Decade
How has Kairo 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.
Kairo by State
Birth registrations for Kairo span all 43 states and territories in the SSA database. The highest counts are in New York, Florida, Texas. The lowest are in West Virginia, Alaska, Nebraska. On average, about 209 Kairos were registered per state.
Kairo + Last Name Combinations
How many people share a full name with Kairo as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kairo
Other first names starting with K with a similar number of bearers.
Kairo: Questions and Answers
How many people in the U.S. are named Kairo?
We estimate approximately 9,831 people named Kairo 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 34,865 Americans share this first name.
Is Kairo a common name?
Kairo is classified as "Rare" and is more popular than 97.7% of all first names in the SSA database. A total of 9,898 births have been registered with this name since 1880.
When was Kairo most popular?
Kairo reached peak popularity in 2023, when 1,534 babies were given this name. The average age of a living person named Kairo is approximately 6 years old, reflecting when the name was most commonly given.
Is Kairo a male name?
Kairo is predominantly male. 97.4% of people with this name are male. See the gender breakdown above for full details.
How many Kairo Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kairo Smith, Kairo Johnson, Kairo 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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