Declan
How to say it: DEK-lun · /ˈdɛklən/
Anglicized form of Irish Deaglán, Old Irish Declán, of unknown meaning though likely beginning with Old Irish dag meaning 'good'; name of a 5th-century Irish saint. source 1
Declan was the 150th most popular boys’ name in the United States in 2025, given to 2,570 babies (Social Security Administration). The 2020s are its busiest decade so far, its births are down about 31% in ten years, and it is projected to slip to #208 by 2030.
Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #150 |
|---|---|
| Babies born in 2025 | 2,570 |
| Share of births | 1 in 1,238 |
| Peak decade | 2020s |
| Change over 10 years | −31% |
| Projected rank for 2030 (estimate) | #208 |
| In France, 2025 | #2,436 among boys’ names, 5 births |
Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.
Its life, decade by decade
Climbing to a new best in the 2020s, Declan stands at its peak. A small retreat is expected from here.
What goes with it
Sharp and compact, it lands with quiet strength. Ronan makes an easy pairing.
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Declan is about 1 in 52.
Around the world
This spelling is used in English, French, Irish.
In France: #2,436 for boys in 2025.
England and Wales: #372. Ireland: #355.
Famous people named Declan
- Declan Rice (born 1999)English footballer
- Declan Galbraith (born 1991)English singer, actor
- Declan John (born 1995)Welsh footballer
From Wikidata and Wikipedia
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