Declan
Declan is a boys' name of Irish origin meaning “full of goodness.” It ranked #139 in the United States in 2025. From the Irish Deaglán, possibly meaning full of goodness.
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how do you pronounce Declan?
DEK-lan
where does the name Declan come from?
An anglicised form of the Irish Declán, also written Deaglán or Déaglán, believed to mean man of prayer.
Saint Declan of Ardmore was a 5th-century Irish bishop said to have preached Christianity in Ireland before Saint Patrick.
how popular is this name?
Declan has appeared in the US top 1,000 in 28 years since 1998. It peaked at #95 in 2019, and ranked #139 in 2025.
See the milestone years
| Year | Rank |
|---|---|
| 2025 | #139 |
| 2024 | #132 |
| 2023 | #132 |
| 2022 | #114 |
| 2021 | #106 |
| 2020 | #101 |
| 2019 | #95 |
| 2018 | #101 |
| 2017 | #115 |
| 2016 | #109 |
| 2010 | #274 |
| 2000 | #544 |
| 1998 | #710 |
Source: SSA National Baby Names Dataset (through 2025). Years absent from the table are years Declan fell outside the top 1,000.
the history of Declan
St Declán founded a monastery in Ireland in the fifth century, placing him among the earliest Irish saints, and St Declán's stone at Ardmore has long been credited with miracles. The name's modern spread beyond Ireland is recent.
who are famous people named Declan?
- Declan McManus (Elvis Costello)
- Declan Donnelly
what are the nicknames and variants of Declan?
Nicknames
Variants around the world
what names are similar to Declan?
what names go well with Declan?
Sibling names that share Declan's rhythm and register without echoing it too closely.
quick answers about Declan
What does the name Declan mean?
Declan means “full of goodness”.
What is the origin of the name Declan?
Declan comes from the Irish naming tradition. Related forms include Deaglán and Declán.
How popular is the name Declan?
Declan ranked #139 in the US in 2025, according to Social Security data. Its best year was 2019, at #95, and it has spent 28 years in the top 1,000 since 1998.
Is Declan a boy or girl name?
Declan is primarily a boys' name.
How do you pronounce Declan?
Declan is pronounced DEK-lan, with 2 syllables.
Last updated · Curated by HushName editorial
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