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Kyllian

#4,800 in 2025Boys' name

Variant of Killian

Kyllian has been given to 318 babies in the U.S. since 2007. In 2025 it ranked #4,800 of 13,926 boys’ names in use. Its peak year was 2023, with 39 recorded.

Babies named Kyllian, 2025

1 in 158,000

Kyllian over time, 1880–2025

Boys
01020304018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Kyllian: meaning, origin, and history

Variant of Killian

Deeper origin not confirmed in the cited records

What Kyllian means

Kyllian is a variant of Killian.

Meaning behind the documented name family

The name developed through Kyllian → Killian → Cillian. The family’s proposed meaning is “strife”, recorded in Irish with the source elements ceallach.

Related names and everyday forms

Related names include Killian.

American usage and historical context

In the United States, 318 boys were recorded with the name Kyllian between 2007 and 2025. Its highest annual count was 39 in 2023; its best national rank was #3,150 in 2023.

Over 5 years its rank rose, from #6,487 in 2020 to #4,800 in 2025. Over 10 years its rank rose, from #5,187 in 2015 to #4,800 in 2025.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Kyllian?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 158,000
21 of 3,315,165 births
Among boys only
1 in 81,300
<0.01% of boys
Rank, 2025
#4,800
of 13,926 boys’ names in use
Coin-flip room size
109,425 kids
Even odds of a second one

Where Kyllian sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 109,425 children born in 2025 and it's an even bet that one of them is another Kyllian. In a class of 30 the chance is Under 1%.

When Kyllians were born

Half of everyone ever recorded as Kyllian was born before 2019 — so the typical Kyllian is around 6 today.

Median birth year
2019
About 6 years old
Biggest decade
2020s
47.5% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
318
People you could plausibly meet
Choose a decade

2020s — 47.5% of all recorded uses (151).

Is Kyllian rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
−1,492
Places dropped
Rank vs 5 years ago
+1,687
Places climbed
Rank vs 10 years ago
+387
Places climbed
Births vs 10 years ago
1.17×
More babies than then
Share of its own peak
53.8%
Peak was 2023 (39)
Years since peak
2
Years
Year-to-year steadiness
Volatile
36.6% average annual change
Best rank ever
#3,150
2023

Spellings of Kyllian

Kyllian is not the most common spelling — Killian is, with 23.7% against Kyllian's 0.47%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Kyllian is used

Across 1910–2025, Kyllian was most concentrated in Florida — about 1 in — boys, against 1 in 1,211,363 across all states with data.

00 per 100,000

Most concentrated

  1. 1Florida1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Kyllian has too little recent state data to map, so this covers all years from 1910.

Kyllian around the world

Where Kyllian ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    2022–2024
    #3,255
    in 2024
  • France
    1990–2025
    #4,737
    in 2025
  • Canada
    2017–2023
    #2,747
    in 2023

Popularity data from Office for National Statistics, Institut national de la statistique et des études économiques and Statistics Canada. ONS data under Open Government Licence v3.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.

Kyllian by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
#4,800
Trend vs 5 yrs ago
Up 1,687
Best rank ever
#3,150
2023
Peak year
2023
39 that year
First recorded
2007
Last recorded
2025
All-time count
318
Count in 2025
21

Names similar to Kyllian

Matched on shared beginnings and endings, similar length, and comparable popularity.

KylianKyliamKaspianRhydianZadrianKassianCyprianAydrianTayvianAmarianXadrianXzavianGiulianKadrianEmilianKylandDaemianZayvianTorrianJadrianKylorAzarianDaymianDadrian

Sibling names for Kyllian

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Kyllian

Top names of 2023, Kyllian's peak yearThe 2020s in fullOther names that peaked in 2023Boys' names starting with K