Baby Names US
Unisex name ★ peaked 2008

Kailen

Gender Unisex · 44% girls Rank 2025 #4,465 Trend ↑ Rising 13%
Rank 2025
#4,465
among boys · ↓1,272 vs 2024
Babies in 2025
23
named Kailen · -47% vs 2024
How common
1 in 74,264
boys born in 2025
Peak year
2008
71 babies
All-time total
1,673
#5,316 all-time among boys
First recorded
1983
in Social Security records

Kailen popularity over time

1,673 babies have been named Kailen since 1983, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.010.020.020.0318801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – – – – – –
1960s – – – – – –
1970s – – – – – –
1980s 36 19 55 6 – #4,752
1990s 204 134 338 34 +515% #2,983
2000s 287 290 577 58 +71% #3,054
2010s 171 295 466 47 -19% #2,866
2020s (to 2025) 30 207 237 40 -15% #2,918

Where Kailen is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 23 0.01 outside top 500
2027 23 0.01 outside top 500
2028 23 0.01 outside top 500
2029 24 0.01 outside top 500
2030 24 0.01 outside top 500

The story of Kailen

Kailen is rare for boys in the United States, ranked #4,465 in 2025 with 23 babies given the name. It is currently rising compared with a decade ago.

Since 1983, 1,673 American babies have been named Kailen, about 56% boys and 44% girls, making it a genuinely unisex name. Its peak came in 2008, when 71 newborns received the name, the signature sound of the 2000s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Kailen stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Kailen?

The median living Kailen is about 17 years old; half are between 10 and 25. An estimated 1,700 people named Kailen are alive in the United States today.

median 17 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Kailen year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 – – 23 #4,465
2024 5 #16,401 38 #3,193
2023 8 #11,673 43 #2,918
2022 7 #12,854 27 #4,042
2021 – – 40 #3,048
2020 10 #9,881 36 #3,168
2019 9 #10,882 31 #3,606
2018 12 #8,880 27 #3,939
2017 12 #9,044 25 #4,174
2016 14 #8,191 36 #3,189
2015 13 #8,685 22 #4,471
2014 10 #10,522 41 #2,866
2013 21 #6,121 28 #3,703
2012 21 #6,219 30 #3,586
2011 24 #5,637 25 #4,048
2010 35 #4,245 30 #3,584
2009 30 #4,865 33 #3,370
2008 35 #4,402 36 #3,195
2007 41 #3,880 28 #3,744
2006 28 #5,019 33 #3,274
2005 24 #5,351 33 #3,126
2004 19 #6,351 24 #3,802
2003 34 #3,981 27 #3,406
2002 24 #4,991 30 #3,054
2001 25 #4,760 24 #3,566
2000 27 #4,473 22 #3,701
1995 23 #4,417 14 #4,403
1990 11 #7,558 6 #7,628
1985 – – 5 #7,066
1980 – – – –
1975 – – – –
1970 – – – –
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Kailen, drawn from the same Social Security data as the charts above.

How old is the average Kailen?

The median living Kailen is about 17 years old. Half of all living Kailens are between 10 and 25 years old.

How many people named Kailen are alive today?

An estimated 1,700 people named Kailen are alive in the United States, based on 1,673 recorded births and Social Security life tables.

How popular is the name Kailen in 2025?

Kailen ranked #4,465 among boys' names in the United States in 2025, with 23 babies given the name, according to Social Security Administration data.

How many people are named Kailen?

1,673 babies have been named Kailen in the United States since 1983, based on Social Security card applications.

When was the name Kailen most popular?

Kailen peaked in 2008, when 71 newborns received the name.

Is Kailen a boy or girl name?

Kailen is used for both: about 44% of babies named Kailen have been girls and 56% boys.

Is the name Kailen rising or falling?

Kailen is on the rise, noticeably more popular now than a decade ago.

Will Kailen become more popular?

Kailen looks stable. If the recent trend holds, we project roughly 24 boys named Kailen in 2030, ranking outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Kailen

Names that sound and feel close to Kailen: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Kailen with similar names → More names starting with K →