MallowbyNames

Delaney

də-LAY-nee · descendant of the dark challenger

2025 rank (girls)
#242
Babies named in 2025
1,283
Peak popularity
2004
2025 frequency
1 in 1,253 girls
Usually for
Girls
Trend
Rising since 1985

Rising since 1985, #242 for girls today.

Popularity of Delaney since 1939

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

6671.3k2k19401960198020002020Most births 2004Girls
Data table (by decade)
DecadeGirls
1930s5
1940s0
1950s12
1960s30
1970s159
1980s335
1990s7,493
2000s17,086
2010s12,869
2020s7,448

Meaning & origin

Delaney first appeared on the U.S. name charts in 1939, but remained rare until the late 20th century. Its trajectory has been rising since 1985, reflecting a broader trend toward Irish surnames as feminine first names. In 2025, Delaney ranked 242nd, with a rate of about 1 in 1,253 girls. Its peak year was 2004, when it reached 102nd place. Popularity has been especially strong in Maine, South Dakota, and Delaware, where Delaney ranked higher than the national average. The name fits a modern, unisex style without being overly trendy.

Delaney is an anglicized form of the Irish surname Ó Dubhshláine, meaning 'descendant of Dubhshláine.' The first element dubh means 'dark' or 'black,' and slán means 'challenge' or 'defiance.' Originally a surname in County Laois, Ireland, it transitioned to a given name in the late 20th century, especially for girls, influenced by similar sounding names like Courtney and the popularity of surnames as first names.

Where Delaney is most popular

Births per 100,000 girls by state. Press play or drag the slider to watch it move across the decades. The lightest shade means too few recorded births.

2020s
Fewermore per 100k girlstoo few births

Nicknames & variants

Nicknames: Laney, Dell, Dee

Variants: Delainey

Sibling names for Delaney

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

Names like Delaney

Names whose popularity has moved with Delaney's over the last 50 years.

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

D is for Delaney, our favorite little girl.

D is for Delaney…”

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

Make Delaney's book

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

Questions parents ask

What does the name Delaney mean?
Delaney means 'descendant of the dark challenger,' derived from the Irish surname Ó Dubhshláine, combining dubh (dark) and slán (challenge or defiance).
How popular is the name Delaney?
As of 2025, Delaney ranked 242nd for girls in the United States, with about 1 in 1,253 girls given the name that year. Its peak popularity was in 2004, when it ranked 102nd.
Is Delaney a boy or girl name?
Delaney is primarily used as a girl's name in the United States today, though historically it was a surname and occasionally used for boys. Since the 1990s, it has been overwhelmingly given to girls.