Kilian
Kilian is a boy's name that peaked in 2023, when it was the 1,031st most popular in the United States. In 2025 it ranked 1,166th. About 2,700 Kilians are alive in the United States today, and half of them are over 7.
Popularity, 1880–2025
girls named Kilian boys named Kilian
By the numbers
- Total US births
- 2,717
- Estimated living today
- 2,700
- Median age today
- 7
- Peak year
- 2023
- Best rank
- 1,031st
- Rank in 2025
- 1,166th
- First recorded
- 1970
- Girls / boys
- 27 / 2,690
How old the living Kilians are
born that year still alive today
Of the 2,717 babies given the name since 1970, about 2,700 are alive — 99 in every hundred. Roughly 2,200 of them are children and 0 are 65 or over. The dotted line is the median: half were born before 2018 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Where the name comes from
Origin Irish
Etymology from Wiktionary, used under CC BY-SA 4.0.
Notable Kilians
- Saint Kilian (640–689)German-Irish saint
- Kilian Jornet (born 1987)Spanish distance runner
- Kilián Ignaz Dientzenhofer (1689–1751)Czech architect
- Kilian Le Blouch (born 1989)French judoka
- Kilian Frankiny (born 1994)Swiss cyclist
- Kilian Albrecht (born 1973)Austrian alpine skier
People named Kilian with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Kilian is most common
Relative to how many babies each state records, Kilian is most concentrated in Florida (3.1×), Washington (2.7×), California (2.3×), Virginia (2.2×).
Total births recorded in each state since 1910. Browse names by state.
Names of 2023
The most popular boys’ names the year Kilian peaked:
Kilian elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| France boys | Kilian | 10,745 | 97th |
| Austria boys | Kilian | 4,091 | 46th |
| Switzerland boys | Kilian | 2,310 | 46th |
| Belgium boys | Kilian | 760 | 182nd |
| Italy boys | Kilian | 477 | — |
| England and Wales boys | Kilian | 266 | 1,226th |
| Ireland boys | Kilian | 213 | 184th |
| Poland boys | Kilian | 181 birth registrations | 264th |
| Scotland boys | Kilian | 19 | 464th |
| Northern Ireland boys | Kilian | 3 | 416th |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Kilian: births by region
| Region | Country | Spelling | Births | Share of the region | Best rank |
|---|---|---|---|---|---|
| German boys | Switzerland | Kilian | 1,741 | 0.140% | 45th |
| French boys | Switzerland | Kilian | 480 | 0.110% | 38th |
| Italian boys | Switzerland | Kilian | 85 | 0.130% | 46th |
| Romansh boys | Switzerland | Kilian | 4 | 0.108% | 18th |
Parts of a country counted above, not extra births. The share is what makes the regions comparable: they differ in size by a factor of three hundred.
By canton, Kilian is most concentrated in Appenzell Ausserrhoden, where 0.34% of children were given it – 40 of them.
Kilian: rank by region
In 2016, Kilian was given 5 times or more in 2 regions of Belgium.
| Region | Spelling | Place | Children |
|---|---|---|---|
| Flanders | Kilian | 865 | 5 |
| Wallonia | Kilian | 478 | 5 |
In 2023, Kilian was among the 10 most common names in 1 region of Italy.
| Region | Spelling | Place | Children |
|---|---|---|---|
| Valle d'Aosta/Vallée d'Aoste | Kilian | 10 | 1 |
In 2025, Kilian was given 2 times or more in 4 regions of Poland.
| Region | Spelling | Place | Children |
|---|---|---|---|
| Dolnośląskie | Kilian | 243 | 2 |
| Lubuskie | Kilian | 116 | 3 |
| Pomorskie | Kilian | 179 | 3 |
| Śląskie | Kilian | 254 | 2 |
Each of these is the top of a list the statistics office cut off somewhere – Belgium below 5 children, Italy after 10 names, Poland below 2 children – and published nothing after. So a region missing here is one where the name fell outside what was published, not one where it went unused. Places are shared where names tie, and the further down a list a place is, the more names can share it.
Kilian by city
| City | Years | Births | Best rank |
|---|---|---|---|
| Berlin boys | 2017–2023 | 258 | 83rd |
One city over a few years, so these are much smaller numbers than the national ones above and not comparable with them.
Kilian among the living
How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.
| Country | Spelling | First forename | Any forename |
|---|---|---|---|
| Finland boys | Kilian | 26 | 50 |
A count of people on a register – Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.
Where Kilian lives in Spain
Not a count of births but of people: 4,572 men called Kilian were living in Spain on 1 January 2025, of every age, born in any year. Where they live is not spread evenly.
Men: the provinces where it is densest
| Province | Spelling | People | Per thousand | Place there |
|---|---|---|---|---|
| Palmas, Las | Kilian | 483 | 0.830 | 159 |
| Tarragona | Kilian | 258 | 0.589 | 220 |
| Santa Cruz de Tenerife | Kilian | 313 | 0.587 | 211 |
| Barcelona | Kilian | 1,355 | 0.465 | 224 |
| Lleida | Kilian | 91 | 0.386 | 283 |
| Girona | Kilian | 146 | 0.351 | 297 |
Listed in 46 of Spain's 52 provinces. In the other 6 it is either held by fewer than 5 people – the point below which the source withholds a name – or it fell past the 5,000 names the source will print for one province. Neither means nobody there is called it. The rate is the source's own, not a share worked out here.
Related names
Kilian against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.