MallowbyNames

Declyn

DEK-lin · of uncertain origin; likely a modern invented name

2025 rank (boys)
#4,539
Babies named in 2025
22
Peak popularity
2021
2025 frequency
1 in 77,640 boys
Usually for
Girls & boys
Trend
Declining since 2017

Declining since 2017, #4,539 for boys today.

Popularity of Declyn since 2004

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

14274120102020Most births 2016GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
2000s1113
2010s168276
2020s128172

Meaning & origin

Declyn is a modern invented name that first appeared in U.S. Social Security records in 2007. It reached its peak popularity in 2021, but has since been falling in usage. As of the latest data, it ranks 4,539th and is given to roughly 1 in every 77,640 babies. The name has no historical roots, and its popularity is driven by contemporary naming trends that favor the melodic 'lyn' ending. Declyn is used for both boys and girls, reflecting the growing trend of unisex names. Its trajectory shows a decline since 2017, suggesting it may be a passing fad rather than a long-standing classic.

Declyn is a contemporary coinage, likely formed by combining the popular prefix "Dec-" (as in Declan) with the fashionable "-lyn" suffix seen in names like Brooklyn and Madelyn. It first appeared in U.S. records in 2007 and is primarily used as a masculine or unisex name, though its usage remains rare.

Nicknames & variants

Nicknames: Dec, Lyn

Variants: Declyn

Sibling names for Declyn

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

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

D is for Declyn, our favorite little person.

D is for Declyn…”

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

Make Declyn's book

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

Questions parents ask

What does the name Declyn mean?
Declyn is a modern invented name with no established meaning. It appears to be a blend of sounds from names like Declan and the suffix -lyn.
How popular is Declyn currently?
In 2023, Declyn ranked 4,539th in the U.S., with about 1 in 77,640 newborns given the name.
Is Declyn a boy or girl name?
Declyn is used for both genders, though it is more commonly given to boys. It is considered a unisex name.