Baby Names US
Unisex name ★ peaked 2003

Dillyn

Gender Unisex · 35% girls Rank 2025 Below top lists
Rank 2025
–
among boys
Babies in 2025
<5
named Dillyn
How common
–
boys born in 2025
Peak year
2003
32 babies
All-time total
634
#8,855 all-time among boys
First recorded
1991
in Social Security records

Dillyn popularity over time

634 babies have been named Dillyn since 1991, 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
00.010.010.0218801900192019401960198020002020BoysGirls
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 – 134 134 13 – #3,300
2000s 79 186 265 27 +98% #4,073
2010s 113 82 195 20 -26% #5,257
2020s (to 2025) 30 10 40 7 -66% #12,526

The story of Dillyn

Dillyn is not currently in use for newborns in the United States: fewer than five babies received the name in 2025. Its story lives in the historical record below.

Since 1991, 634 American babies have been named Dillyn, about 65% boys and 35% girls, making it a genuinely unisex name. Its peak came in 2003, when 32 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 Dillyn stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Dillyn?

The median living Dillyn is about 18 years old; half are between 12 and 24. An estimated 600 people named Dillyn are alive in the United States today.

median 18 020406080100

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

Dillyn 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 – – – –
2024 – – – –
2023 6 #13,892 5 #12,696
2022 7 #12,592 – –
2021 7 #12,541 – –
2020 10 #9,744 5 #12,526
2019 9 #10,701 – –
2018 12 #8,755 8 #9,044
2017 7 #13,083 – –
2016 12 #9,036 8 #9,058
2015 13 #8,585 14 #6,072
2014 17 #7,082 – –
2013 19 #6,542 8 #8,998
2012 8 #12,538 11 #7,185
2011 7 #13,749 17 #5,257
2010 9 #11,519 16 #5,550
2009 11 #10,170 17 #5,386
2008 10 #11,024 18 #5,121
2007 12 #9,710 19 #4,859
2006 10 #10,809 19 #4,731
2005 5 #17,217 19 #4,514
2004 11 #9,427 18 #4,644
2003 12 #8,663 20 #4,151
2002 8 #11,418 20 #4,073
2001 – – 18 #4,342
2000 – – 18 #4,251
1995 – – 13 #4,591
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 Dillyn, drawn from the same Social Security data as the charts above.

How old is the average Dillyn?

The median living Dillyn is about 18 years old. Half of all living Dillyns are between 12 and 24 years old.

How many people named Dillyn are alive today?

An estimated 600 people named Dillyn are alive in the United States, based on 634 recorded births and Social Security life tables.

How popular is the name Dillyn in 2025?

Dillyn did not appear in the 2025 Social Security data, which means fewer than five babies received the name that year.

How many people are named Dillyn?

634 babies have been named Dillyn in the United States since 1991, based on Social Security card applications.

When was the name Dillyn most popular?

Dillyn peaked in 2003, when 32 newborns received the name.

Is Dillyn a boy or girl name?

Dillyn is used for both: about 35% of babies named Dillyn have been girls and 65% boys.

Is the name Dillyn rising or falling?

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

Names like Dillyn

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

Compare Dillyn with similar names → More names starting with D →