The nameDeclan

Declan is the anglicised form of the Irish Deaglán, the name of an early Irish saint.

Meaning

Declan comes from the Irish Deaglán, of uncertain meaning, sometimes explained as "full of goodness".

Origin

Irish. Saint Declan of Ardmore is said to have brought Christianity to the area of Waterford before Saint Patrick.

History

In England and Wales Declan reached 66th place in 2000. In the United States it entered the top 100 in 2019 at 95th place.

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Famous people named Declan

Popularity of the name Declan

Declan in the United States

131stmost popular boys' name in the United States in 2024
2019peak year (4,007 births)
56,351babies named Declan in the United States since 1880
02,0044,007 18801900192019401960198020002020
Births per year in the United States. Source: Social Security Administration, names given at least 5 times a year.

Declan was most popular in the United States in the 2010s, with 31,333 births over the decade, 56% of all recorded babies named Declan. Its rise began around 2001, and it peaked in 2019. Half of all babies named Declan in the United States were born before 2016, so it is mostly a name of today's children and teenagers. Over the last five years on record, its popularity has held steady at around 3,262 births a year.

Declan in the United Kingdom

364thmost popular boys' name in the United Kingdom in 2025
1997peak year (1,284 births)
14,427babies named Declan in the United Kingdom since 1997
06421,284 200020052010201520202025
Births per year in the United Kingdom. Source: ONS, NRS and NISRA (England, Wales, Scotland, Northern Ireland), names given at least 3 times a year.

Declan was most popular in the United Kingdom in the 2000s, with 7,306 births over the decade, 51% of all recorded babies named Declan. Half of all babies named Declan in the United Kingdom were born before 2004. Over the last five years on record, it has been falling: 130 births a year on average, against 167 in the five years before.

Declan in Ireland

352ndmost popular boys' name in Ireland in 2025
1971peak year (574 births)
10,909babies named Declan in Ireland since 1964
0287574 198020002020
Births per year in Ireland. Source: Central Statistics Office, names given at least 3 times a year.

Sibling names for Declan

Names from the same generation as Declan, whose popularity in the United States has followed a similar path.

For a sister

For a brother

How many people are named Declan? See the counter → · What would your name be in 1950? · Name origin quiz

Compare Declan with another name

Meaning, origin and popularity of Declan side by side with the name of your choice.

Declan in our baby name lists

Frequently asked questions

What does the name Declan mean?

Declan comes from the Irish Deaglán, of uncertain meaning, sometimes explained as "full of goodness".

What is the origin of the name Declan?

Irish. Saint Declan of Ardmore is said to have brought Christianity to the area of Waterford before Saint Patrick.

Is Declan a girl's or a boy's name?

Declan is a boy's name.

How popular is the name Declan?

In 2024, Declan was the 131st most popular name for baby boys in the United States, with 2,758 births.

What are good sibling names for Declan?

Names from the same generation, with a similar popularity in the United States: Norah, Quinn, Cora and Nora for a sister, Finn, Ronan, Easton and Sawyer for a brother.

Who are famous people named Declan?

Declan Rice, footballer; Declan McKenna, singer; Declan Donnelly, television presenter.