Caius
Every Caius since 1994 — 2,329 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Caius
Caius is uncommon for boys in the United States, ranked #927 in 2025 with 254 babies given the name. It is currently rising compared with a decade ago.
Since 1994, 2,329 American babies have been named Caius. Its peak came in 2025, when 254 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 Caius stood among all boys' names in any year, or use the compare tool to plot it against other names.
Caius year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Boys | Boys rank |
|---|---|---|
| 2025 | 254 | #927 |
| 2024 | 206 | #1,060 |
| 2023 | 140 | #1,347 |
| 2022 | 150 | #1,282 |
| 2021 | 138 | #1,341 |
| 2020 | 156 | #1,209 |
| 2019 | 137 | #1,328 |
| 2018 | 130 | #1,361 |
| 2017 | 110 | #1,512 |
| 2016 | 153 | #1,224 |
| 2015 | 138 | #1,289 |
| 2014 | 124 | #1,377 |
| 2013 | 109 | #1,494 |
| 2012 | 74 | #1,924 |
| 2011 | 44 | #2,709 |
| 2010 | 49 | #2,520 |
| 2009 | 43 | #2,806 |
| 2008 | 27 | #3,840 |
| 2007 | 29 | #3,610 |
| 2006 | 15 | #5,557 |
| 2005 | 23 | #3,958 |
| 2004 | 14 | #5,537 |
| 2003 | 15 | #5,072 |
| 2002 | 13 | #5,439 |
| 2001 | 16 | #4,703 |
| 2000 | 10 | #6,382 |
| 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
How popular is the name Caius in 2025?
Caius ranked #927 among boys' names in the United States in 2025, with 254 babies given the name, according to Social Security Administration data.
How many people are named Caius?
2,329 babies have been named Caius in the United States since 1994, based on Social Security card applications.
When was the name Caius most popular?
Caius peaked in 2025, when 254 newborns received the name.
Is Caius a boy or girl name?
Caius is overwhelmingly a boy's name — 100% of babies with the name.
Is the name Caius rising or falling?
Caius is on the rise — noticeably more popular now than a decade ago.