Name meaning & stats
Killian
Killian (Irish origin). 16,824 US babies since 1940, peak 2017.
What it means
No agreed meaning on record
Irish
In US birth records
Peak year: 2017
16,824 US babies were named Killian between 1940 and 2025.
Careers
Not enough notable people named Killian (or its spelling family) to say anything reliable yet. That's a gap in the data, not the name.
Spelling family
The most common spelling: 32% of the family
Names that sound the same, grouped by Heyotag. Share of US babies since 1940.
Name twins (peaked around 2017)