Meaning not yet researched.
Kaizen: US boys given the name each year, 1880 to 2025, from Social Security card applications. 895 in 2025. Its best rank was #364 in 2025.
US births per year · SSA card applications
Its highest rank in 146 years of records is this year’s. About 99% of babies named Kaizen in 2025 were boys.
Baby name · US data 1880–2025
#364 for US boys in 2025, its highest rank in 146 years of records.
Hover, tap or use the arrow keys for any year. Years with fewer than five babies of a sex are not published by SSA and show as zero.
Kaizen: US boys given the name each year from 1880 to 2025. 895 boys in 2025. Peak: #364 in 2025 · most boys in one year: 895 (2025).
In 2025, 895 US boys were named Kaizen, making it the 364th most common boys’ name of the year, up 138 places from #502 in 2024. That is 287 more than the 608 boys named Kaizen in 2024. Its best rank for boys was #364, reached in this year, 2025. That year also had the most boys given the name: 895. For comparison, it was #2,334 in 2015 and unranked in 1950.
Social Security card records list Kaizen in 22 years of the 146 from 1880 to 2025, starting in 2004 with 6 babies. In all, 3,070 US babies have been given the name, 1.0% of them girls and 99% boys. Its busiest decade was the 2020s, with 2,534 babies named Kaizen.
Over the 10 years from 2016 to 2025, 2,781 US boys were named Kaizen; the busiest of those years was 2025, with 895. In 2025 that was about 1 in 1,908 of the boys in SSA’s list for the year.
Among the states, Kaizen ranked highest in Hawaii in 2025, at #100 for boys there. It was in the top 100 in 1 state (counting DC). Related spellings in the SSA files include Kasen (11,538 babies since 1880), Kaison (7,198 babies since 1880), Kaysen (7,075 babies since 1880) and Kaisen (2,637 babies since 1880). Rarer spellings such as Caizyn and Kaiicen are summarised on this page.
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Rare spellings summarised here: Caizyn (7), Kaiicen (6).
Numbers are all-time US births. Links come from Wikidata’s “said to be the same as” (P460, CC0) and our spelling rule: at most two letters different, with the same sound pattern.
No nicknames listed for Kaizen in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
US boys. Rank within each state. SSA leaves out states where fewer than five boys got the name, so 13 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Hawaii | 10 | #100 | #146 |
| Mississippi | 24 | #134 | — |
| Louisiana | 28 | #186 | — |
| Georgia | 57 | #215 | — |
| Alabama | 26 | #220 | — |
| Delaware | 5 | #227 | — |
| North Dakota | 5 | #237 | — |
| South Carolina | 23 | #248 | — |
| Kentucky | 21 | #258 | — |
| Arkansas | 14 | #258 | — |
| North Carolina | 45 | #272 | — |
| Minnesota | 22 | #281 | — |
| Florida | 63 | #308 | — |
| Indiana | 24 | #321 | — |
| Ohio | 36 | #323 | — |
| Tennessee | 26 | #341 | — |
| Nevada | 9 | #343 | — |
| Texas | 105 | #355 | — |
| Wisconsin | 15 | #364 | — |
| Oklahoma | 13 | #364 | — |
| Massachusetts | 13 | #394 | — |
| New Mexico | 5 | #398 | — |
| Nebraska | 6 | #401 | — |
| Illinois | 27 | #408 | — |
| Kansas | 9 | #416 | — |
| Virginia | 19 | #422 | — |
| Maryland | 12 | #423 | — |
| New York | 39 | #439 | — |
| Missouri | 14 | #445 | — |
| Pennsylvania | 21 | #482 | — |
| Michigan | 16 | #527 | — |
| Connecticut | 5 | #533 | — |
| Iowa | 6 | #539 | — |
| Arizona | 13 | #541 | — |
| Washington | 13 | #549 | — |
| Colorado | 10 | #553 | — |
| California | 55 | #553 | #1,968 |
| New Jersey | 13 | #556 | — |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | 5 | #16,037 | 895 | #364 |
| 2024 | 9 | #10,661 | 608 | #502 |
| 2023 | 5 | #16,316 | 487 | #588 |
| 2022 | — | — | 257 | #903 |
| 2021 | — | — | 158 | #1,220 |
| 2020 | 7 | #12,769 | 103 | #1,584 |
| 2019 | 5 | #16,713 | 81 | #1,858 |
| 2018 | — | — | 78 | #1,908 |
| 2017 | — | — | 63 | #2,160 |
| 2016 | — | — | 51 | #2,494 |
| 2015 | — | — | 56 | #2,334 |
| 2014 | — | — | 42 | #2,831 |
| 2013 | — | — | 34 | #3,233 |
| 2012 | — | — | 26 | #3,949 |
| 2011 | — | — | 19 | #4,904 |
| 2010 | — | — | 15 | #5,889 |
| 2009 | — | — | 18 | #5,205 |
| 2008 | — | — | 18 | #5,168 |
| 2007 | — | — | 11 | #7,344 |
| 2006 | — | — | 5 | #13,009 |
| 2005 | — | — | 8 | #8,703 |
| 2004 | — | — | 6 | #10,656 |
About the data: counts are Social Security card applications for US births, for names given to at least five babies of a sex in a year (SSA, names.zip, public domain). Ranks follow SSA’s own order: most births first, ties alphabetical. Files retrieved 2026-10-05 (checksum on our sources page).