Declan

What Declan means

Meaning not yet sourced. Wiktionary has no word-by-word meaning for Declan yet, and we don’t write our own.

Editor’s note More popular in the US than England & Wales: #139 vs #372 in 2025 Worked out from the official US and England & Wales counts, not a meaning.

How popular is Declan?

US: Falling: down from #112 in 2015. England & Wales: Falling: down from #245 in 2015.

Biggest US share so far: 2019, when 3,971 boys got the name (#95 that year). First in the US records in 1951.

How common

• About 1 in 665 baby boys in the US in 2025
• About 1 in 2,428 baby boys in England and Wales in 2025
• About 1 in 1,511 baby boys in Scotland in 2025

“1 in N” divides by all listed births for that sex. The US list leaves out names given to fewer than 5 babies, and the UK lists leave out names given to 2 or fewer, so the real figure is a little rarer than shown.

Where in the US

Most popular in WY (5.5 per 1,000 boys), VT (4.95 per 1,000 boys), DE (4.75 per 1,000 boys) in 2025.

SSA state data, 2025. Share of all listed boys born in each state.

US vs UK

Declan is #139 in the US and #372 in England & Wales (2025).

Same sex as this page (boys). SSA (US), ONS (England and Wales), NRS (Scotland).

Boy or girl?

In 2025, 99.3% of US babies named Declan were boys.

Counts below the publishing threshold (US 5, UK 3) are not included.

How to say it

IPA from Wiktionary.

Other spellings parents chose in 2025

• Deklan57 US
• Deklyn28 US
• Declyn22 US
• Decklan21 US
• Deklin16 US
• Decklyn16 US
• Deklen11 US
• Declen5 US

Names that sound the same and differ by a letter or two, with baby counts for the same sex. US and E&W counts.

If you like Declan

Boys

• Finn#206“the Sami”^*
• Liam#1Form of William, meaning “will + helmet”^*
• Ronan#247Irish, meaning “little seal”^*
• Kian#400Editor’s note Up from #489 in 2015 to #400 in 2025 in the US
• Lochlan#644Editor’s note Up from #841 in 2015 to #644 in 2025 in the US
• Rhys#410Welsh, from Old Welsh Ris, meaning “ardor, fiery warrior”^*

For a sister

• Teagan#340Editor’s note First shows up in US records in 1979, with 6 babies
• Alaina#224Form of Elon, meaning “oak tree”^*
• Kenna#759“descendant of Cionaodh”^*
• Alayna#332Editor’s note Down from #223 in 2015 to #332 in 2025 in the US
• Gwen#725Same root as Wendy, meaning “watercourse with a bend + island”^*
• Guinevere#898Editor’s note More popular in the US than England & Wales: #898 vs #2,788 in 2025

Picked from the US top 1,000 in 2025: names Wiktionary also files under Irish & Celtic, whose US popularity since 1990 rose and fell most like Declan’s. Rank is US 2025.