Kaithlyn
Kaithlyn was given to 6 girls in 2025, #14,010 among girls’ names; 389 Americans have been recorded with it since 1985 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kaithlyn by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Kaithlyn?
#14,010 among girls’ names, 2025
Kaithlyn fell from #9,779 in 2015 to #14,010 in 2025 among girls’ names; its share of girls born fell from 6.2 to 3.7 per million.
21 babies in 2002, the peak
Kaithlyn peaked in 2002, when 21 girls were given it, #5,564 among girls’ names. The 6 births of 2025 are 29% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 6 | #14,010 | 3.7 |
| 2024 | 7 | #12,760 | 4.3 |
| 2023 | 8 | #11,671 | 5.0 |
| 2021 | 6 | #14,309 | 3.7 |
| 2020 | 6 | #14,236 | 3.7 |
| 2019 | 6 | #14,629 | 3.6 |
| 2018 | 5 | #16,817 | 2.9 |
| 2017 | 10 | #10,315 | 5.8 |
| 2016 | 8 | #12,282 | 4.5 |
| 2015 | 11 | #9,779 | 6.2 |
Every recorded year (36)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2014 | 17 | #7,139 | 9.5 |
| 2013 | 14 | #8,336 | 8.0 |
| 2012 | 14 | #8,414 | 7.9 |
| 2011 | 10 | #10,751 | 5.7 |
| 2010 | 11 | #10,101 | 6.2 |
| 2009 | 20 | #6,678 | 10.9 |
| 2008 | 17 | #7,559 | 9.0 |
| 2007 | 16 | #7,897 | 8.3 |
| 2006 | 15 | #8,043 | 7.9 |
| 2005 | 18 | #6,660 | 9.7 |
| 2004 | 17 | #6,927 | 9.3 |
| 2003 | 21 | #5,682 | 11.5 |
| 2002 | 21 | #5,564 | 11.7 |
| 2001 | 14 | #7,504 | 7.8 |
| 2000 | 11 | #8,844 | 6.1 |
| 1998 | 9 | #9,661 | 5.1 |
| 1997 | 6 | #12,839 | 3.4 |
| 1996 | 5 | #14,540 | 2.9 |
| 1995 | 9 | #9,097 | 5.1 |
| 1994 | 7 | #11,081 | 3.9 |
| 1993 | 6 | #12,527 | 3.3 |
| 1992 | 12 | #7,243 | 6.5 |
| 1990 | 8 | #9,654 | 4.2 |
| 1988 | 5 | #12,687 | 2.8 |
| 1986 | 7 | #8,957 | 4.1 |
| 1985 | 6 | #9,863 | 3.5 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Kaithlyn a boy’s or a girl’s name?
Kaithlyn has been recorded only for girls: SSA lists no boys with the name in 36 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Kaithlyn: the SSA national file counts each sex separately.
How many people are named Kaithlyn, and how old are they?
An estimated 385 Americans named Kaithlyn and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 20 years old and half are between 13 and 25. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 304 people named Kaithlyn (304 women and girls, 0 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 354 born in the U.S. The Census count is 14% 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.
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 6 names spelled alike, given to 6,789 babies since 1880, Kaithlyn is the third most given (5.7% of them). In 2025 it was given to 6 of their 34 babies (18%), the second 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 Kaithlyn
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 Kaithlyn and names like it
- Compare Kaithlyn and KathlynBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sKaithlyn peaked in 2002.
- California’s most given namesThe state where SSA recorded the most babies named Kaithlyn since 1910.
- The top names of 2002The year the most babies were named Kaithlyn.
- The names of Generation ZMost people named Kaithlyn alive today were born 1997-2012.
- Names starting with KMost given first.