Meaning not yet researched.
Cailyn: US girls given the name each year, 1880 to 2025, from Social Security card applications. 40 in 2025. Its best rank was #725 in 2009.
US births per year · SSA card applications
Peaked at #725 in 2009; #3,728 in 2025. About 89% of babies named Cailyn in 2025 were girls.
Baby name · US data 1880–2025
#3,728 for US girls in 2025. Its best year was 2009, at #725.
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.
Cailyn: US girls and boys given the name each year from 1880 to 2025. 40 girls in 2025. Peak: #725 in 2009 · most girls in one year: 401 (2009).
In 2025, 40 US girls were named Cailyn, making it the 3,728th most common girls’ name of the year, down 435 places from #3,293 in 2024. That is 8 fewer than the 48 girls named Cailyn in 2024. Its best rank for girls was #725, reached in 2009. That year also had the most girls given the name: 401. For comparison, it was #1,339 in 2015 and unranked in 1950.
In 2025, 5 US boys were named Cailyn, making it the 12,347th most common boys’ name of the year. Its best rank for boys was #12,347, reached in this year, 2025. That year also had the most boys given the name: 5. For comparison, it was unranked (under five boys) in 2015 and unranked in 1950.
Social Security card records list Cailyn in 45 years of the 146 from 1880 to 2025, starting in 1979 with 5 babies. In all, 5,554 US babies have been given the name, 99.9% of them girls and 0.1% boys. Its busiest decade was the 2000s, with 2,445 babies named Cailyn.
Over the 10 years from 2016 to 2025, 669 US girls were named Cailyn; the busiest of those years was 2016, with 114. In 2025 that was about 1 in 40,182 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Kaelyn (15,648 babies since 1880), Kailyn (14,351 babies since 1880), Callan (12,634 babies since 1880) and Kaylyn (12,091 babies since 1880). Rarer spellings such as Cailynne 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: Cailynne (22).
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 Cailyn in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | 40 | #3,728 | 5 | #12,347 |
| 2024 | 48 | #3,293 | — | — |
| 2023 | 53 | #3,105 | — | — |
| 2022 | 65 | #2,666 | — | — |
| 2021 | 55 | #3,011 | — | — |
| 2020 | 70 | #2,474 | — | — |
| 2019 | 70 | #2,513 | — | — |
| 2018 | 67 | #2,588 | — | — |
| 2017 | 87 | #2,186 | — | — |
| 2016 | 114 | #1,818 | — | — |
| 2015 | 177 | #1,339 | — | — |
| 2014 | 178 | #1,328 | — | — |
| 2013 | 219 | #1,112 | — | — |
| 2012 | 256 | #985 | — | — |
| 2011 | 301 | #869 | — | — |
| 2010 | 322 | #836 | — | — |
| 2009 | 401 | #725 | — | — |
| 2008 | 399 | #742 | — | — |
| 2007 | 276 | #974 | — | — |
| 2006 | 306 | #870 | — | — |
| 2005 | 209 | #1,125 | — | — |
| 2004 | 206 | #1,107 | — | — |
| 2003 | 186 | #1,161 | — | — |
| 2002 | 172 | #1,189 | — | — |
| 2001 | 127 | #1,477 | — | — |
| 2000 | 163 | #1,219 | — | — |
| 1999 | 151 | #1,245 | — | — |
| 1998 | 157 | #1,185 | — | — |
| 1997 | 129 | #1,336 | — | — |
| 1996 | 94 | #1,626 | — | — |
| 1995 | 88 | #1,674 | — | — |
| 1994 | 77 | #1,841 | — | — |
| 1993 | 53 | #2,385 | — | — |
| 1992 | 41 | #2,876 | — | — |
| 1991 | 23 | #4,356 | — | — |
| 1990 | 44 | #2,649 | — | — |
| 1989 | 25 | #3,908 | — | — |
| 1988 | 27 | #3,493 | — | — |
| 1987 | 13 | #5,640 | — | — |
| 1986 | 11 | #6,216 | — | — |
| 1985 | 18 | #4,299 | — | — |
| 1984 | 11 | #5,944 | — | — |
| 1983 | 8 | #7,398 | — | — |
| 1982 | 7 | #8,336 | — | — |
| 1979 | 5 | #10,396 | — | — |
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).