Meaning not yet researched.
Kaius: US boys given the name each year, 1880 to 2025, from Social Security card applications. 216 in 2025. Its best rank was #1,023 in 2020.
US births per year · SSA card applications
Peaked at #1,023 in 2020; #1,029 in 2025. Every baby recorded as Kaius in 2025 was a boy.
Baby name · US data 1880–2025
#1,029 for US boys in 2025. Its best year was 2020, at #1,023.
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.
Kaius: US boys given the name each year from 1880 to 2025. 216 boys in 2025. Peak: #1,023 in 2020 · most boys in one year: 216 (2025).
In 2025, 216 US boys were named Kaius, making it the 1,029th most common boys’ name of the year, up 106 places from #1,135 in 2024. That is 30 more than the 186 boys named Kaius in 2024. Its best rank for boys was #1,023, reached in 2020. The most boys given the name in a single year was 216, in 2025. For comparison, it was #1,508 in 2015 and unranked in 1950.
Social Security card records list Kaius in 21 years of the 146 from 1880 to 2025, starting in 2005 with 7 babies. In all, 2,011 US babies have been given the name, all of them boys. Its busiest decade was the 2020s, with 1,150 babies named Kaius.
Over the 10 years from 2016 to 2025, 1,642 US boys were named Kaius; the busiest of those years was 2025, with 216. In 2025 that was about 1 in 7,908 of the boys in SSA’s list for the year.
Among the states, Kaius ranked highest in Louisiana in 2025, at #721 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Caius (2,329 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 Kaius 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 34 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Louisiana | 6 | #721 | — |
| Wisconsin | 6 | #735 | — |
| North Carolina | 12 | #741 | — |
| Missouri | 7 | #753 | — |
| Georgia | 12 | #766 | — |
| Indiana | 7 | #809 | — |
| Arizona | 7 | #814 | — |
| Washington | 7 | #847 | — |
| Maryland | 5 | #863 | — |
| Minnesota | 5 | #871 | — |
| Colorado | 5 | #906 | #657 |
| New York | 13 | #969 | #1,956 |
| Texas | 24 | #995 | #2,255 |
| Pennsylvania | 7 | #1,048 | — |
| Florida | 12 | #1,096 | #1,454 |
| California | 19 | #1,100 | #1,102 |
| Illinois | 6 | #1,203 | — |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | — | — | 216 | #1,029 |
| 2024 | — | — | 186 | #1,135 |
| 2023 | — | — | 189 | #1,121 |
| 2022 | — | — | 177 | #1,163 |
| 2021 | — | — | 180 | #1,132 |
| 2020 | — | — | 202 | #1,023 |
| 2019 | — | — | 169 | #1,155 |
| 2018 | — | — | 115 | #1,502 |
| 2017 | — | — | 94 | #1,691 |
| 2016 | — | — | 114 | #1,496 |
| 2015 | — | — | 110 | #1,508 |
| 2014 | — | — | 85 | #1,773 |
| 2013 | — | — | 45 | #2,645 |
| 2012 | — | — | 34 | #3,271 |
| 2011 | — | — | 27 | #3,844 |
| 2010 | — | — | 14 | #6,207 |
| 2009 | — | — | 15 | #5,949 |
| 2008 | — | — | 15 | #5,925 |
| 2007 | — | — | 10 | #7,882 |
| 2006 | — | — | 7 | #10,119 |
| 2005 | — | — | 7 | #9,626 |
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).