Kilian Boy
How popular is Kilian?
#1,166 boy name in 2025
177 baby boys were named Kilian in the US in 2025, making it the 1166th most popular boy name.
Kilian popularity over time
Boys Girls
| Rank in 2025 | #1,166 for boys (▼ 113 from 2024) |
|---|---|
| Babies in 2025 | 177 boys |
| 10-year trend | Rising (+34% babies vs 2015) |
| Earlier ranks | #1,334 in 2015, #1,222 in 2020 |
| Peak year | 2023 (212 boys) |
| Highest rank | #1,031 in 2023 |
| First recorded | 1970 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Kilian counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Killian family of names ranked #254 for boys in 2025 (#212 the year before), with 1,434 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Killian | 770 | 54% |
| Kylian | 448 | 31% |
| Kilian | 177 | 12% |
| Kyllian | 21 | 1% |
| Kilyan | 12 | 1% |
| Killion | 6 | 0% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Kilian is most popular
Babies named Kilian per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Virginia: 0.2 per 1,000 (41 boys)
- Maryland: 0.2 per 1,000 (19 boys)
- Washington: 0.2 per 1,000 (26 boys)
- New York: 0.2 per 1,000 (65 boys)
- Colorado: 0.1 per 1,000 (19 boys)
Kilian by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1970s | 37 | #3,939 |
| 1980s | 33 | #4,265 |
| 1990s | 218 | #2,527 |
| 2000s | 315 | #2,622 |
| 2010s | 1,006 | #1,159 |
| 2020s | 1,081 | #1,031 |
Boy names about as popular as Kilian
Questions
- Is Kilian a boy or girl name?
- Kilian is mostly a boy name. Over the last 10 years, 100% of babies named Kilian were boys.
- How popular is the name Kilian?
- 177 baby boys were named Kilian in the US in 2025, making it the 1166th most popular boy name.
- When was Kilian most popular?
- Kilian peaked in 2023, when 212 boys were given the name. Its highest rank was #1,031 in 2023.
- How many people are named Kilian?
- 2,717 babies have been named Kilian in the US since 1880. We estimate about 2,691 of them are alive in 2026, with a median age of 8.
- Where is Kilian most popular?
- From 2021 to 2025, Kilian was most common in Virginia, at 0.2 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.