MallowbyNames

Kullen

KUL-en · Slim or narrow; also a variant of Cullen.

2025 rank (boys)
#6,143
Babies named in 2025
14
Peak popularity
2012
2025 frequency
1 in 122,005 boys
Usually for
Boys
Trend
Declining since 2011

Declining since 2011, #6,143 for boys today.

Popularity of Kullen since 1991

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

214364200020102020Most births 2012Boys
Data table (by decade)
DecadeBoys
1990s108
2000s154
2010s408
2020s120

Meaning & origin

Kullen is a modern given name that emerged in the United States in 1991, with its peak usage in 2012. As of 2025, it ranks 6,143, with an estimated 1 in 122,005 boys receiving the name. This places it among rarer choices, often appealing to parents seeking a distinct sound with Irish roots. The name's trajectory has been declining since 2011, suggesting it has not maintained the momentum of its early 2010s popularity. Kullen is not commonly found in top baby name lists for any state, indicating its usage is scattered rather than regionally concentrated. Its style aligns with the trend of surname-style first names, sharing phonetic similarities with names like Cullen and Colton.

Kullen is a variant of the Irish surname Cullen, which derives from the Old Irish name Cuilen, meaning 'holly' or 'young hound'. It has also been used as a given name in modern times, possibly influenced by the similar-sounding name Collin or the Irish surname McQuillan. The name gained some usage in the United States after 1991, reflecting the trend of adopting surnames as first names.

Nicknames & variants

Nicknames: Kull

Variants: Cullen, Cullin

Sibling names for Kullen

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

Sisters: Keegan, Molly, Bridget, Nora, Sloane

Brothers: Declan, Finn, Liam, Sean, Ronan

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

K is for Kullen, our favorite little boy.

K is for Kullen…”

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

Make Kullen's book

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

Questions parents ask

What does the name Kullen mean?
Kullen is a variant of Cullen, which means 'slim' or 'narrow' in Irish, ultimately derived from the word for 'holly' or 'young hound'.
How popular is the name Kullen?
As of 2025, Kullen ranked 6,143 in the United States, with about 1 in 122,005 boys given the name that year. Its peak popularity was in 2012.
Is Kullen a boy's name or a girl's name?
Kullen is primarily used as a boy's name, reflecting its origin as a variant of the Irish surname Cullen.