How Many People Are Named Kaisei?
people named Kaisei are alive in the United States today (estimate)
About 1 in 2,513,123 people in the US has this name
Based on 137 babies named Kaisei in Social Security records from 2005 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
10 births
Trend
Stable (last 10 years)
⚧ Gender Distribution
All of the babies given the name Kaisei in the records were boys.
👥 Age Distribution
The average person named Kaisei alive today is about 10 years old, and 100% are under 30. Half of them were between 6 and 15 in 2025.
📈 Popularity Over Time
Kaisei first appears in the records in 2005 and was given most often in 2007, to 10 babies. In 2025, 6 babies got the name.
Babies given the name each year, 2005 to 2025
🏆 Rank History
Kaisei has never been one of the 100 most popular boys' names. Its best rank was #7,877, in 2007. In 2025 it ranked #11,315.
| Boys | |
|---|---|
| Rank in 2025 | #11,315 |
| Best rank | #7,877 (2007) |
| Years in the top 100 | None |
| Rank in its biggest decade | #9,425 in the 2010s |
📍 State-Wise Distribution
People named Kaisei alive today, by the state where they were born (estimate; state records start in 1910).
More people named Kaisei were born in California than in any other state: about 5 of those alive today.
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