MallowbyNames

Dylen

DIL-en · Possibly a variant of Dylan, traditionally meaning 'son of the sea' in Welsh.

2025 rank (boys)
#10,695
Babies named in 2025
6
Peak popularity
2004
2025 frequency
1 in 284,679 boys
Usually for
Boys
Trend
Declining since 2004

Declining since 2004, #10,695 for boys today.

Popularity of Dylen since 1991

Babies named Dylen per year in U.S. Social Security records.

193958200020102020Most births 2004Boys
Data table (by decade)
DecadeBoys
1990s229
2000s446
2010s312
2020s51

Meaning & origin

Dylen is a modern respelling of the Welsh classic Dylan, a name that has enjoyed widespread popularity since the 1960s. This variant first appeared in U.S. records in 1991 and saw its peak usage in 2004, during the height of the 'Dylan' boom. Since then, its use has fallen, and as of 2025 it is given to roughly 1 in every 284,679 baby boys. While Dylan itself has been among the top 50 names for boys for decades, Dylen remains much rarer, reflecting a broader pattern of parents customizing recognizable names to add a distinctive touch. Its top states are not recorded. The name's connection to the sea gives it a natural, poetic quality, though its meaning is indirect via its parent name.

Dylen is a modern respelling of Dylan, a Welsh name derived from 'dy' meaning 'great' and 'llanw' meaning 'tide' or 'sea'. It emerged in the late 20th century as part of the trend of respelling popular names to create a distinctive variation.

Nicknames & variants

Nicknames: Dyl, D

Variants: Dylan, Dillan, Dylann

Sibling names for Dylen

Names that share Dylen's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

D is for Dylen, our favorite little boy.

D is for Dylen…”

In a Mallowby alphabet book, Dylen's letter becomes Dylen's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Dylen's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Dylen mean?
Dylen is likely a variant of the Welsh name Dylan, which means 'son of the sea' (from 'dy' meaning 'great' and 'llanw' meaning 'tide' or 'sea').
How popular is the name Dylen?
Dylen has been given to about 1 in every 284,679 baby boys in the United States in 2025 (the latest available year). It was most popular in 2004 and has been declining since.
Is Dylen a boy's name or a girl's name?
Dylen is primarily a boy's name, used almost exclusively for boys.