Kayin
Every Kayin since 1977 — 630 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Kayin
Kayin is rare for boys in the United States, ranked #9,319 in 2025 with 8 babies given the name. It is currently declining compared with a decade ago.
Since 1977, 630 American babies have been named Kayin — about 87% boys and 13% girls, making it a genuinely unisex name. Its peak came in 2005, when 39 newborns received the name — the signature sound of the 2000s.
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 Kayin stood among all boys' names in any year, or use the compare tool to plot it against other names.
Kayin year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | — | — | 8 | #9,319 |
| 2024 | — | — | — | — |
| 2023 | 8 | #11,706 | 11 | #7,522 |
| 2022 | 7 | #12,897 | 11 | #7,509 |
| 2021 | — | — | 9 | #8,518 |
| 2020 | — | — | 8 | #9,148 |
| 2019 | — | — | 10 | #7,936 |
| 2018 | — | — | 11 | #7,377 |
| 2017 | — | — | 17 | #5,409 |
| 2016 | — | — | 23 | #4,402 |
| 2015 | — | — | 8 | #9,165 |
| 2014 | 5 | #17,869 | 10 | #7,855 |
| 2013 | 7 | #13,899 | 18 | #5,076 |
| 2012 | — | — | 23 | #4,325 |
| 2011 | 5 | #18,189 | 16 | #5,561 |
| 2010 | 5 | #18,417 | 18 | #5,142 |
| 2009 | — | — | 24 | #4,218 |
| 2008 | — | — | 31 | #3,530 |
| 2007 | 5 | #19,041 | 27 | #3,844 |
| 2006 | 8 | #12,977 | 25 | #3,945 |
| 2005 | 11 | #9,786 | 28 | #3,492 |
| 2004 | 6 | #15,092 | 30 | #3,250 |
| 2003 | — | — | 22 | #3,910 |
| 2002 | 8 | #11,633 | 22 | #3,861 |
| 2001 | 7 | #12,730 | 31 | #2,964 |
| 2000 | — | — | 21 | #3,856 |
| 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 Kayin in 2025?
Kayin ranked #9,319 among boys' names in the United States in 2025, with 8 babies given the name, according to Social Security Administration data.
How many people are named Kayin?
630 babies have been named Kayin in the United States since 1977, based on Social Security card applications.
When was the name Kayin most popular?
Kayin peaked in 2005, when 39 newborns received the name.
Is Kayin a boy or girl name?
Kayin is used for both: about 13% of babies named Kayin have been girls and 87% boys.
Is the name Kayin rising or falling?
Kayin is declining — less popular now than a decade ago.