Caidyn
Caidyn was given to 23 boys in 2025, #4,419 among boys’ names; 1,270 Americans have been recorded with it since 1999 (Social Security Administration, published May 2026).
An estimated 1,260 Americans named Caidyn and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 15 years old and half are between 9 and 18.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Caidyn by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Caidyn?
#4,419 among boys’ names, 2025
Caidyn fell from #3,031 in 2015 to #4,419 in 2025 among boys’ names; its share of boys born fell from 19.8 to 13.5 per million.
95 babies in 2011, the peak
Caidyn peaked in 2011, when 95 babies were given it (64 boys, #2,080 among boys’ names). The 23 births of 2025 are 24% of that peak.
Births by sex.
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2025 | under 5 | 23 | #4,419 | |
| 2024 | 5 | #15,714 | 25 | #4,213 |
| 2023 | 8 | #11,365 | 27 | #4,016 |
| 2022 | 5 | #15,736 | 26 | #4,105 |
| 2021 | 6 | #13,792 | 16 | #5,594 |
| 2020 | 9 | #10,417 | 26 | #3,936 |
| 2019 | 8 | #11,559 | 37 | #3,145 |
| 2018 | 11 | #9,276 | 43 | #2,804 |
| 2017 | 9 | #10,851 | 34 | #3,317 |
| 2016 | 12 | #8,990 | 32 | #3,451 |
Every recorded year (27)
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2015 | 13 | #8,547 | 38 | #3,031 |
| 2014 | 10 | #10,279 | 44 | #2,713 |
| 2013 | 25 | #5,346 | 45 | #2,626 |
| 2012 | 22 | #5,935 | 63 | #2,136 |
| 2011 | 31 | #4,591 | 64 | #2,080 |
| 2010 | 27 | #5,129 | 51 | #2,432 |
| 2009 | 34 | #4,384 | 55 | #2,351 |
| 2008 | 39 | #4,022 | 42 | #2,833 |
| 2007 | 33 | #4,489 | 31 | #3,453 |
| 2006 | 21 | #6,172 | 41 | #2,787 |
| 2005 | 31 | #4,389 | 20 | #4,338 |
| 2004 | 35 | #4,006 | 23 | #3,875 |
| 2003 | 16 | #6,935 | 14 | #5,299 |
| 2002 | 12 | #8,379 | under 5 | |
| 2001 | 5 | #15,761 | 5 | #10,790 |
| 2000 | 8 | #10,890 | 5 | #10,579 |
| 1999 | 5 | #14,769 | under 5 |
Ranks: girls’ names and boys’ names ranked separately in each year’s SSA file; “under 5” is a year SSA did not list the name for that sex.
Is Caidyn a boy’s or a girl’s name?
Of the 1,270 Americans recorded as Caidyn, 35% are girls and 65% boys. In 2025 it went to 23 boys; SSA lists no girls with it that year (fewer than 5, or none).
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Caidyn: the SSA national file counts each sex separately.
How many people are named Caidyn, and how old are they?
1,260 alive in 2026, estimated
That is 99% of the 1,270 Americans ever recorded as Caidyn. The median Caidyn alive today is 15 years old; half are between 9 and 18.
The 2020 Census counted 893 people named Caidyn (371 women and girls, 522 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,094 born in the U.S. The Census count is 18% 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 |
|---|---|---|
| Generation Z | 1997-2012 | 725 |
| Generation Alpha | 2013-2025 | 533 |
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).
Names spelled alike
Of these 8 names spelled alike, given to 206,417 babies since 1880, Caidyn is the eighth most given (<1% of them). In 2025 it was given to 23 of their 4,684 babies (<1%), again the eighth most given.
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 Caidyn
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 Caidyn and names like it
- Compare Caidyn and CadenBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2010sCaidyn peaked in 2011.
- Texas’s most given namesThe state where SSA recorded the most babies named Caidyn since 1910.
- The top names of 2011The year the most babies were named Caidyn.
- The names of Generation ZMost people named Caidyn alive today were born 1997-2012.
- Names starting with CMost given first.