Baby Names US
boys' name ★ peaked 2025

Kaisen

Gender Boy Rank 2025 #800 Trend ↑ Rising 59%
Rank 2025
#800
among boys · ↑102 vs 2024
Babies in 2025
311
named Kaisen · +16% vs 2024
How common
1 in 5,492
boys born in 2025
Peak year
2025
311 babies
All-time total
2,637
#2,781 all-time among boys
First recorded
2004
in Social Security records

Kaisen popularity over time

2,637 babies have been named Kaisen since 2004, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.050.10.150.218801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – – – – – –
1960s – – – – – –
1970s – – – – – –
1980s – – – – – –
1990s – – – – – –
2000s – 129 129 13 – #2,822
2010s 6 1,023 1,029 103 +698% #1,059
2020s (to 2025) 6 1,473 1,479 247 +140% #800

Where Kaisen is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 339 0.20 outside top 500
2027 364 0.21 outside top 500
2028 388 0.23 outside top 500
2029 409 0.24 outside top 500
2030 427 0.25 outside top 500

Where Kaisen is most popular

Boys named Kaisen per 1,000 boys born in each state, 2021–2025. National average: 0.148 per 1,000. Strongest in Mississippi, Louisiana, and South Carolina.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are boys named Kaisen born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Boys 2021–2025 Per 1,000 vs national
Mississippi 56 0.986 +565%
Louisiana 57 0.557 +276%
South Carolina 45 0.435 +194%
Alabama 47 0.430 +190%
Hawaii 5 0.322 +117%
North Carolina 76 0.298 +101%
Tennessee 44 0.244 +64%
Indiana 39 0.243 +64%
Virginia 38 0.200 +35%
Arkansas 12 0.190 +28%
Ohio 47 0.177 +20%
Michigan 36 0.176 +19%
Texas 150 0.170 +15%
Florida 79 0.167 +12%
Washington 27 0.165 +11%
Georgia 41 0.162 +9%
Wisconsin 19 0.160 +8%
Oklahoma 14 0.158 +7%
West Virginia 5 0.153 ≈ national
Missouri 21 0.152 ≈ national
Iowa 10 0.145 ≈ national
Pennsylvania 33 0.124 -16%
New York 51 0.118 -21%
Nevada 6 0.105 -29%
Illinois 24 0.094 -37%
Connecticut 5 0.074 -50%
New Jersey 11 0.055 -63%
Kentucky 5 0.050 -66%
California 39 0.043 -71%
Minnesota 5 0.041 -73%
Alaska – – –
Arizona – – –
Colorado – – –
District of Columbia – – –
Delaware – – –
Idaho – – –
Kansas – – –
Massachusetts – – –
Maryland – – –
Maine – – –
Montana – – –
North Dakota – – –
Nebraska – – –
New Hampshire – – –
New Mexico – – –
Oregon – – –
Rhode Island – – –
South Dakota – – –
Utah – – –
Vermont – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Kaisen

Kaisen is uncommon for boys in the United States, ranked #800 in 2025 with 311 babies given the name. It is currently rising compared with a decade ago.

Since 2004, 2,637 American babies have been named Kaisen. Its peak came in 2025, when 311 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Kaisen stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Kaisen?

The median living Kaisen is about 5 years old; half are between 2 and 9. An estimated 2,600 people named Kaisen are alive in the United States today.

median 5 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Kaisen year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 – – 311 #800
2024 6 #14,301 261 #902
2023 – – 241 #937
2022 – – 254 #910
2021 – – 214 #1,026
2020 – – 192 #1,052
2019 – – 193 #1,059
2018 – – 143 #1,287
2017 – – 138 #1,309
2016 – – 152 #1,230
2015 – – 98 #1,633
2014 6 #15,550 88 #1,722
2013 – – 65 #2,078
2012 – – 59 #2,223
2011 – – 40 #2,927
2010 – – 47 #2,606
2009 – – 43 #2,822
2008 – – 32 #3,459
2007 – – 18 #5,110
2006 – – 16 #5,422
2005 – – 10 #7,398
2004 – – 10 #7,268
2003 – – – –
2002 – – – –
2001 – – – –
2000 – – – –
1995 – – – –
1990 – – – –
1985 – – – –
1980 – – – –
1975 – – – –
1970 – – – –
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Kaisen, drawn from the same Social Security data as the charts above.

How old is the average Kaisen?

The median living Kaisen is about 5 years old. Half of all living Kaisens are between 2 and 9 years old.

How many people named Kaisen are alive today?

An estimated 2,600 people named Kaisen are alive in the United States, based on 2,637 recorded births and Social Security life tables.

How popular is the name Kaisen in 2025?

Kaisen ranked #800 among boys' names in the United States in 2025, with 311 babies given the name, according to Social Security Administration data.

How many people are named Kaisen?

2,637 babies have been named Kaisen in the United States since 2004, based on Social Security card applications.

When was the name Kaisen most popular?

Kaisen peaked in 2025, when 311 newborns received the name.

Is Kaisen a boy or girl name?

Kaisen is overwhelmingly a boy's name: 100% of babies with the name.

Is the name Kaisen rising or falling?

Kaisen is on the rise, noticeably more popular now than a decade ago.

Will Kaisen become more popular?

Kaisen is trending upward. If the recent trend holds, we project roughly 427 boys named Kaisen in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Kaisen

Names that sound and feel close to Kaisen: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Kaisen with similar names → More names starting with K →