Spellings
Killian or Kylian?
In the US in 2025, 54% of babies in this name family were spelled Killian and 31% Kylian. Same name, slightly different impression: here are the figures for each spelling.
Killian54% of the family770 born in 2025#417 among boys−21% since 2015Kylian31% of the family448 born in 2025#622 among boys×37 since 2015Kilian12% of the family177 born in 2025#1,166 among boys+34% since 2015Kyllian1% of the family21 born in 2025#4,707 among boys+17% since 2015Kilyan1% of the family12 born in 2025#6,803 among boys×2 since 2015Kyliann<1% of the family0 born in 2025
Ten years ago
Killian already led in 2015, with 85% of the family's births; it has 54% in 2025. All spellings together, the family went from 1,143 to 1,428 births (+25%).
| Spelling | 2015 | 2025 | Change |
|---|---|---|---|
| Killian | 976 | 770 | −21% |
| Kylian | 12 | 448 | ×37 |
| Kilian | 132 | 177 | +34% |
| Kyllian | 18 | 21 | +17% |
| Kilyan | 5 | 12 | ×2 |
How they sound
- Killian /ˈkɪliən/ (KIL-ee-un)
- Kylian /ˈkɪliən/ (KIL-ee-un)
- Kilian /ˈkɪliən/ (KIL-ee-uhn)
- Kyllian /kilˈjan/ (kee-LYAN)
- Kilyan /kiˈljan/ (kee-LYAN)
- Kyliann /kiˈljan/ (kee-LYAN)
In France
In France in 2025: Killian 5 births, Kylian 175 births (#298 among boys), Kilian 10 births, Kyllian 5 births, Kilyan 10 births and Kyliann 5 births.
Sources: Social Security Administration (SSA), Insee (France), 2025 data. How we calculate these figures.
Which spelling is yours?
The one-minute style quiz.