Meaning not yet researched.
Kaisen: US boys given the name each year, 1880 to 2025, from Social Security card applications. 311 in 2025. Its best rank was #800 in 2025.
US births per year · SSA card applications
Its highest rank in 146 years of records is this year’s. Every baby recorded as Kaisen in 2025 was a boy.
Baby name · US data 1880–2025
#800 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.
Kaisen: US boys given the name each year from 1880 to 2025. 311 boys in 2025. Peak: #800 in 2025 · most boys in one year: 311 (2025).
In 2025, 311 US boys were named Kaisen, making it the 800th most common boys’ name of the year, up 102 places from #902 in 2024. That is 50 more than the 261 boys named Kaisen in 2024. Its best rank for boys was #800, reached in this year, 2025. That year also had the most boys given the name: 311. For comparison, it was #1,633 in 2015 and unranked in 1950.
Social Security card records list Kaisen in 22 years of the 146 from 1880 to 2025, starting in 2004 with 10 babies. In all, 2,637 US babies have been given the name, 0.5% of them girls and 99.5% boys. Its busiest decade was the 2020s, with 1,479 babies named Kaisen.
Over the 10 years from 2016 to 2025, 2,099 US boys were named Kaisen; the busiest of those years was 2025, with 311. In 2025 that was about 1 in 5,492 of the boys in SSA’s list for the year.
Among the states, Kaisen ranked highest in Mississippi in 2025, at #163 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Kayson (15,487 babies since 1880), Kason (14,951 babies since 1880), Kasen (11,538 babies since 1880) and Kaison (7,198 babies since 1880).
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.
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 Kaisen 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 27 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Mississippi | 20 | #163 | — |
| West Virginia | 5 | #348 | — |
| Alabama | 14 | #387 | — |
| South Carolina | 11 | #455 | — |
| Louisiana | 9 | #509 | #667 |
| Arkansas | 6 | #521 | #594 |
| Tennessee | 13 | #571 | — |
| Ohio | 17 | #586 | #1,301 |
| North Carolina | 15 | #630 | — |
| Virginia | 11 | #646 | — |
| Illinois | 14 | #660 | #1,433 |
| Oklahoma | 6 | #660 | — |
| Georgia | 13 | #735 | — |
| Missouri | 7 | #752 | — |
| Kentucky | 5 | #761 | — |
| Pennsylvania | 10 | #813 | — |
| Texas | 33 | #815 | #1,709 |
| Florida | 17 | #867 | — |
| Indiana | 6 | #902 | — |
| Michigan | 7 | #951 | — |
| New York | 12 | #1,020 | — |
| Washington | 5 | #1,071 | — |
| New Jersey | 5 | #1,112 | — |
| California | 13 | #1,398 | — |
Births and national rank for each year SSA lists the name, newest first.
| 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 |
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).