Killian

What Killian means

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

Editor’s note Down from #349 in 2015 to #417 in 2025 in the US Worked out from the official US and England & Wales counts, not a meaning.

How popular is Killian?

US: Falling: down from #349 in 2015. England & Wales: Rising: up from #1121 in 2015.

Biggest US share so far: 2017, when 1,506 boys got the name (#248 that year). First in the US records in 1915.

How common

• About 1 in 2,218 baby boys in the US in 2025
• About 1 in 4,609 baby boys in England and Wales in 2025
• About 1 in 2,806 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 VT (4.13 per 1,000 boys), SD (1.56 per 1,000 boys), WV (1.14 per 1,000 boys) in 2025.

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

US vs UK

Killian is #417 in the US and #627 in England & Wales (2025).

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

Boy or girl?

In 2025, 98.1% of US babies named Killian were boys.

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

Other spellings

Other spellings parents chose in 2025

• Kylian448 US · 53 E&W
• Kilian177 US · 23 E&W
• Kyllian21 US
• Kelian19 US
• Kalian8 US
• Killion6 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 Killian

Boys

• Ellis#243“benevolent, kind”^*
• Alistair#897“to defend + man”^*
• Idris#694Editor’s note More popular in England & Wales than the US: #142 vs #694 in 2025
• Rowan#59“little red one”^*
• Rhys#410Welsh, from Old Welsh Ris, meaning “ardor, fiery warrior”^*
• Harvey#251“iron + blazing”^*

For a sister

• Ellis#682“benevolent, kind”^*
• Gwendolyn#360Variant of Gwendolen, meaning “white, fair, blessed + ring, bow…^*
• Winifred#922Editor’s note Up from #1,437 in 2015 to #922 in 2025 in the US
• Guinevere#898Editor’s note More popular in the US than England & Wales: #898 vs #2,788 in 2025
• Gwen#725Same root as Wendy, meaning “watercourse with a bend + island”^*
• Nola#821Editor’s note Down from #769 in 2015 to #821 in 2025 in the US

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 Killian’s. Rank is US 2025.