Kaidyn
Kaidyn is given to both girls and boys: 11 girls and 67 boys were given it in 2025 (#9,141 among girls’ names and #2,157 among boys’, #4,210 among all names counting both); 4,061 Americans have been recorded with it since 1998 (Social Security Administration, published May 2026). Boys have outnumbered girls among babies named Kaidyn every year since 2006.
An estimated 4,030 Americans named Kaidyn and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 13 years old and half are between 8 and 17.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kaidyn by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Kaidyn?
#2,157 among boys’ names, 2025
Kaidyn fell from #1,186 in 2015 to #2,157 in 2025 among boys’ names; its share of boys born fell from 81.4 to 39.2 per million.
278 babies in 2012, the peak
Kaidyn peaked in 2012, when 278 babies were given it (185 boys, #1,043 among boys’ names). The 78 births of 2025 (girls and boys) are 28% of that peak.
Births by sex.
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2025 | 11 | #9,141 | 67 | #2,157 |
| 2024 | 16 | #7,076 | 83 | #1,911 |
| 2023 | 14 | #7,815 | 123 | #1,468 |
| 2022 | 21 | #5,865 | 108 | #1,616 |
| 2021 | 17 | #6,829 | 100 | #1,661 |
| 2020 | 25 | #5,085 | 113 | #1,500 |
| 2019 | 30 | #4,600 | 156 | #1,220 |
| 2018 | 43 | #3,588 | 139 | #1,312 |
| 2017 | 42 | #3,663 | 100 | #1,609 |
| 2016 | 47 | #3,397 | 156 | #1,213 |
Every recorded year (28)
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2015 | 61 | #2,866 | 156 | #1,186 |
| 2014 | 80 | #2,316 | 190 | #1,051 |
| 2013 | 87 | #2,161 | 162 | #1,120 |
| 2012 | 93 | #2,069 | 185 | #1,043 |
| 2011 | 101 | #1,959 | 161 | #1,128 |
| 2010 | 97 | #2,048 | 139 | #1,260 |
| 2009 | 109 | #1,924 | 131 | #1,326 |
| 2008 | 91 | #2,196 | 124 | #1,377 |
| 2007 | 74 | #2,527 | 95 | #1,630 |
| 2006 | 67 | #2,683 | 69 | #1,957 |
| 2005 | 66 | #2,583 | 52 | #2,280 |
| 2004 | 57 | #2,820 | 54 | #2,174 |
| 2003 | 32 | #4,147 | 33 | #2,961 |
| 2002 | 21 | #5,563 | 24 | #3,613 |
| 2001 | 12 | #8,447 | 9 | #7,203 |
| 2000 | under 5 | 6 | #9,687 | |
| 1999 | under 5 | 6 | #9,286 | |
| 1998 | 6 | #13,196 | 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 Kaidyn a boy’s or a girl’s name?
Of the 4,061 Americans recorded as Kaidyn, 33% are girls and 67% boys.
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Kaidyn: the SSA national file counts each sex separately.
How many people are named Kaidyn, and how old are they?
4,030 alive in 2026, estimated
That is 99% of the 4,061 Americans ever recorded as Kaidyn. The median Kaidyn alive today is 13 years old; half are between 8 and 17.
The 2020 Census counted 2,728 people named Kaidyn (1,054 women and girls, 1,674 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 3,372 born in the U.S. The Census count is 19% 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 | 1,890 |
| Generation Alpha | 2013-2025 | 2,130 |
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).
Where are babies named Kaidyn born?
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| Florida | 11 | #1,162 | 0.8× |
| California | 6 | #2,333 | 0.3× |
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Kaidyn with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 8 names spelled alike, given to 249,740 babies since 1880, Kaidyn is the eighth most given (1.6% of them). In 2025 it was given to 78 of their 5,937 babies (1.3%), the fifth 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 Kaidyn
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 Kaidyn and names like it
- Compare Kaidyn and KaydenBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2010sKaidyn peaked in 2012.
- Texas’s most given namesThe state where SSA recorded the most babies named Kaidyn since 1910.
- The top names of 2012The year the most babies were named Kaidyn.
- The names of Generation AlphaMost people named Kaidyn alive today were born 2013-2025.
- Names starting with KMost given first.