Baby Names US
Unisex name ★ peaked 2009

Kaydyn

Gender Unisex · 40% girls Rank 2025 #8,590
Rank 2025
#8,590
among boys · ↑80 vs 2024
Babies in 2025
9
named Kaydyn
How common
1 in 189,786
boys born in 2025
Peak year
2009
53 babies
All-time total
574
#9,808 all-time among boys
First recorded
2000
in Social Security records

Kaydyn popularity over time

574 babies have been named Kaydyn since 2000, 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
0.010.010.020.0218801900192019401960198020002020BoysGirls
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 – – – – – –
1990s – – – – – –
2000s 110 84 194 19 – #3,686
2010s 118 186 304 30 +57% #4,075
2020s (to 2025) – 76 76 13 -58% #5,578

The story of Kaydyn

Kaydyn is rare for boys in the United States, ranked #8,590 in 2025 with 9 babies given the name. It is currently declining compared with a decade ago.

Since 2000, 574 American babies have been named Kaydyn, about 60% boys and 40% girls, making it a genuinely unisex name. Its peak came in 2009, when 53 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 Kaydyn stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Kaydyn?

The median living Kaydyn is about 13 years old; half are between 8 and 16. An estimated 600 people named Kaydyn are alive in the United States today.

median 13 020406080100

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

Kaydyn 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 – – 9 #8,590
2024 – – 9 #8,670
2023 – – 13 #6,720
2022 – – 15 #6,010
2021 – – 14 #6,187
2020 – – 16 #5,578
2019 5 #16,773 15 #5,966
2018 5 #16,885 14 #6,175
2017 12 #9,058 19 #5,026
2016 16 #7,424 19 #5,047
2015 8 #12,407 24 #4,232
2014 10 #10,541 25 #4,075
2013 10 #10,624 16 #5,534
2012 13 #8,889 21 #4,610
2011 22 #6,041 15 #5,824
2010 17 #7,358 18 #5,141
2009 24 #5,796 29 #3,686
2008 23 #6,035 25 #4,090
2007 20 #6,691 12 #6,865
2006 15 #8,050 – –
2005 10 #10,526 13 #6,048
2004 8 #12,179 – –
2003 – – 5 #11,852
2002 5 #16,773 – –
2001 – – – –
2000 5 #16,276 – –
1995 – – – –
1990 – – – –
1985 – – – –
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 Kaydyn, drawn from the same Social Security data as the charts above.

How old is the average Kaydyn?

The median living Kaydyn is about 13 years old. Half of all living Kaydyns are between 8 and 16 years old.

How many people named Kaydyn are alive today?

An estimated 600 people named Kaydyn are alive in the United States, based on 574 recorded births and Social Security life tables.

How popular is the name Kaydyn in 2025?

Kaydyn ranked #8,590 among boys' names in the United States in 2025, with 9 babies given the name, according to Social Security Administration data.

How many people are named Kaydyn?

574 babies have been named Kaydyn in the United States since 2000, based on Social Security card applications.

When was the name Kaydyn most popular?

Kaydyn peaked in 2009, when 53 newborns received the name.

Is Kaydyn a boy or girl name?

Kaydyn is used for both: about 40% of babies named Kaydyn have been girls and 60% boys.

Is the name Kaydyn rising or falling?

Kaydyn is declining, less popular now than a decade ago.

Names like Kaydyn

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

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