Cailynn
Cailynn was given to 17 girls in 2025, #6,587 among girls’ names; 1,183 Americans have been recorded with it since 1990 (Social Security Administration, published May 2026).
An estimated 1,170 Americans named Cailynn and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 15 years old and half are between 10 and 20.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Cailynn by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Cailynn?
#6,587 among girls’ names, 2025
Cailynn fell from #2,970 in 2015 to #6,587 in 2025 among girls’ names; its share of girls born fell from 32.5 to 10.6 per million.
68 babies in 2009, the peak
Cailynn peaked in 2009, when 68 girls were given it, #2,679 among girls’ names. The 17 births of 2025 are 25% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 17 | #6,587 | 10.6 |
| 2024 | 26 | #5,042 | 16.0 |
| 2023 | 30 | #4,580 | 18.7 |
| 2022 | 24 | #5,341 | 14.6 |
| 2021 | 22 | #5,596 | 13.4 |
| 2020 | 26 | #4,905 | 16.1 |
| 2019 | 25 | #5,182 | 14.9 |
| 2018 | 42 | #3,625 | 24.7 |
| 2017 | 40 | #3,789 | 23.2 |
| 2016 | 52 | #3,145 | 29.3 |
Every recorded year (35)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 58 | #2,970 | 32.5 |
| 2014 | 59 | #2,894 | 33.0 |
| 2013 | 67 | #2,634 | 38.2 |
| 2012 | 66 | #2,687 | 37.5 |
| 2011 | 64 | #2,732 | 36.4 |
| 2010 | 56 | #3,015 | 31.5 |
| 2009 | 68 | #2,679 | 37.0 |
| 2008 | 64 | #2,806 | 33.8 |
| 2007 | 47 | #3,492 | 24.4 |
| 2006 | 40 | #3,805 | 21.0 |
| 2005 | 40 | #3,657 | 21.6 |
| 2004 | 24 | #5,237 | 13.1 |
| 2003 | 36 | #3,807 | 19.7 |
| 2002 | 19 | #5,934 | 10.6 |
| 2001 | 28 | #4,334 | 15.6 |
| 2000 | 20 | #5,519 | 11.0 |
| 1999 | 30 | #3,898 | 16.9 |
| 1998 | 23 | #4,653 | 13.0 |
| 1997 | 14 | #6,539 | 8.0 |
| 1996 | 15 | #6,098 | 8.6 |
| 1995 | 8 | #9,697 | 4.5 |
| 1994 | 13 | #6,732 | 7.3 |
| 1993 | 6 | #11,994 | 3.3 |
| 1992 | 9 | #8,827 | 4.9 |
| 1990 | 5 | #13,257 | 2.6 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Cailynn a boy’s or a girl’s name?
Cailynn has been recorded only for girls: SSA lists no boys with the name in 35 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Cailynn: the SSA national file counts each sex separately.
How many people are named Cailynn, and how old are they?
1,170 alive in 2026, estimated
That is 99% of the 1,183 Americans ever recorded as Cailynn. The median Cailynn alive today is 15 years old; half are between 10 and 20.
The 2020 Census counted 904 people named Cailynn (902 women and girls, 2 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,036 born in the U.S. The Census count is 13% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Millennials | 1981-1996 | 55 |
| Generation Z | 1997-2012 | 633 |
| Generation Alpha | 2013-2025 | 485 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
How common is the spelling Cailynn?
Cailynn is a less common spelling of Kaylin: SSA has recorded 1,183 Cailynn and 19,934 Kaylin since 1880.
Of these 8 names spelled alike, given to 66,821 babies since 1880, Cailynn is the eighth most given (1.8% of them). In 2025 it was given to 17 of their 611 babies (2.8%), the seventh most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Cailynn
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Cailynn and names like it
- Compare Cailynn and KaylinBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sCailynn peaked in 2009.
- Texas’s most given namesThe state where SSA recorded the most babies named Cailynn since 1910.
- The top names of 2009The year the most babies were named Cailynn.
- The names of Generation ZMost people named Cailynn alive today were born 1997-2012.
- Names starting with CMost given first.