Kaizen
Kaizen was given to 895 boys in 2025, #364 among boys’ names; 3,070 Americans have been recorded with it since 2004 (Social Security Administration, published May 2026).
An estimated 3,050 Americans named Kaizen and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 3 years old and half are between 1 and 5.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kaizen by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Kaizen?
#364 among boys’ names, 2025
Kaizen rose from #2,333 in 2015 to #364 in 2025 among boys’ names; its share of boys born rose from 0.03 to 0.52 per 1,000.
900 babies in 2025, the peak
Kaizen peaked in 2025, when 900 babies were given it (895 boys, #364 among boys’ names). In 2024 it went to 608 boys.
Births by sex.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 895 | #364 | 0.52 |
| 2024 | 608 | #502 | 0.35 |
| 2023 | 487 | #588 | 0.28 |
| 2022 | 257 | #903 | 0.15 |
| 2021 | 158 | #1,220 | 0.09 |
| 2020 | 103 | #1,584 | 0.06 |
| 2019 | 81 | #1,858 | 0.05 |
| 2018 | 78 | #1,907 | 0.04 |
| 2017 | 63 | #2,159 | 0.03 |
| 2016 | 51 | #2,494 | 0.03 |
Every recorded year (22)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 56 | #2,333 | 0.03 |
| 2014 | 42 | #2,829 | 0.02 |
| 2013 | 34 | #3,231 | 0.02 |
| 2012 | 26 | #3,946 | 0.01 |
| 2011 | 19 | #4,902 | 0.01 |
| 2010 | 15 | #5,885 | 0.01 |
| 2009 | 18 | #5,203 | 0.01 |
| 2008 | 18 | #5,163 | 0.01 |
| 2007 | 11 | #7,340 | 0.01 |
| 2006 | 5 | #13,002 | under 0.01 |
| 2005 | 8 | #8,696 | under 0.01 |
| 2004 | 6 | #10,650 | under 0.01 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Kaizen a boy’s or a girl’s name?
Of the 3,070 Americans recorded as Kaizen, 1% are girls and 99% boys. In 2025 it went to 5 girls and 895 boys.
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Kaizen: the SSA national file counts each sex separately.
How many people are named Kaizen, and how old are they?
3,050 alive in 2026, estimated
That is 99% of the 3,070 Americans ever recorded as Kaizen. The median Kaizen alive today is 3 years old; half are between 1 and 5.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Generation Z | 1997-2012 | 125 |
| Generation Alpha | 2013-2025 | 2,930 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made.
Where are babies named Kaizen born?
The states with the most babies named Kaizen are Texas, Florida and Georgia, with 26% of its births recorded by state in 2025.
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| Texas | 105 | #355 | 0.9× |
| Florida | 63 | #308 | 0.8× |
| Georgia | 57 | #215 | 1.3× |
| California | 55 | #553 | 0.6× |
| North Carolina | 45 | #272 | 1.0× |
| New York | 39 | #439 | 0.7× |
| Ohio | 36 | #323 | 0.9× |
| Louisiana | 28 | #186 | 1.8× |
| Illinois | 27 | #408 | 0.7× |
| Tennessee | 26 | #341 | 0.8× |
Where Kaizen is more common than its national share predicts
Relative to its national share, Kaizen is most over-represented in Hawaii: since 2004 it was given 12.6 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Kaizen with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 5 names spelled alike, given to 3,668 babies since 1880, Kaizen is the most given (84% of them). In 2025 it was given to 900 of their 1,025 babies (88%), again the most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Kaizen
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Kaizen and names like it
- Compare Kaizen and KayzenBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sKaizen peaked in 2025.
- Texas’s most given namesThe state where SSA recorded the most babies named Kaizen since 1910.
- The top names of 2025The year the most babies were named Kaizen.
- The names of Generation AlphaMost people named Kaizen alive today were born 2013-2025.
- Names starting with KMost given first.