How Many People Are Named Kai?
people named Kai are alive in the United States today (estimate)
About 1 in 4,396 people in the US has this name
Based on 78,710 babies named Kai in Social Security records from 1926 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎 Rare
Peak Year
5,732 births
Trend
Rising (last 10 years)
⚧ Gender Distribution
Of the babies given the name Kai, 10.8% were girls and 89.3% were boys. The share of girls among babies named Kai fell from 18.2% in the 1950s to 6.3% in the 2020s. It was highest in the 1970s, at 42%.
👥 Age Distribution
The average person named Kai alive today is about 11 years old, and 94% are under 30. Half of them were between 4 and 16 in 2025.
📈 Popularity Over Time
Kai first appears in the records in 1926 and was given most often in 2022, to 5,732 babies. In 2025, 4,002 babies got the name. Over the last ten years, the number each year has been rising.
Babies given the name each year, 1926 to 2025
🏆 Rank History
Kai never made the top 10 boys' names. Its best rank was #59, in 2022, and it was in the top 100 for 7 years, 2019 to 2025. In 2025 it ranked #93. Among girls, its best rank was #770, in 2021.
| Boys | Girls | |
|---|---|---|
| Rank in 2025 | #93 | #1,054 |
| Best rank | #59 (2022) | #770 (2021) |
| Years in the top 100 | 7 (2019 to 2025) | None |
| Rank in its biggest decade | #71 in the 2020s | #908 in the 2010s |
📍 State-Wise Distribution
People named Kai alive today, by the state where they were born (estimate; state records start in 1910).
More people named Kai were born in California than in any other state: about 12,977 of those alive today. Compared with the national rate in the same years, Kai was given 6.3 times as often in Hawaii, 2 times in District of Columbia and 1.8 times in Alaska.
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