Kaisen Boy
How popular is Kaisen?
#800 boy name in 2025
311 baby boys were named Kaisen in the US in 2025, making it the 800th most popular boy name.
Kaisen popularity over time
Boys Girls
| Rank in 2025 | #800 for boys (▲ 102 from 2024) |
|---|---|
| Babies in 2025 | 311 boys |
| 10-year trend | Rising fast (+217% babies vs 2015) |
| Earlier ranks | #1,625 in 2015, #1,051 in 2020 |
| Peak year | 2025 (311 boys) |
| Highest rank | #800 in 2025 |
| First recorded | 2004 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.2% in a class of 25 kids born in 2025 |
Kaisen counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Kayson family of names ranked #44 for boys in 2025 (#54 the year before), with 6,536 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Kayson | 1,305 | 20% |
| Kason | 480 | 7% |
| Kasen | 622 | 10% |
| Kaison | 557 | 9% |
| Kaysen | 772 | 12% |
| Cason | 291 | 4% |
| Cayson | 296 | 5% |
| Casen | 293 | 4% |
| Kaizen | 895 | 14% |
| Kaisen | 311 | 5% |
| Caysen | 143 | 2% |
| Kasyn | 89 | 1% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Kaisen is most popular
Babies named Kaisen per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Mississippi: 1.0 per 1,000 (56 boys)
- Louisiana: 0.6 per 1,000 (57 boys)
- South Carolina: 0.4 per 1,000 (45 boys)
- Alabama: 0.4 per 1,000 (47 boys)
- Hawaii: 0.3 per 1,000 (5 boys)
Kaisen by decade
Boy names about as popular as Kaisen
Questions
- Is Kaisen a boy or girl name?
- Kaisen is mostly a boy name. Over the last 10 years, 100% of babies named Kaisen were boys.
- How popular is the name Kaisen?
- 311 baby boys were named Kaisen in the US in 2025, making it the 800th most popular boy name.
- When was Kaisen most popular?
- Kaisen peaked in 2025, when 311 boys were given the name. Its highest rank was #800 in 2025.
- How many people are named Kaisen?
- 2,637 babies have been named Kaisen in the US since 1880. We estimate about 2,625 of them are alive in 2026, with a median age of 6.
- Where is Kaisen most popular?
- From 2021 to 2025, Kaisen was most common in Mississippi, at 1.0 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.