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Boy's name · #418 in the US (2025) · 2020s wave
Killian first appeared in 1915, vanished from the records entirely for 61 years, and since returning in 1982 has climbed back to #418. About 16,000 boys have carried it in all.
See where Killian is more common.
Appears in 2020-2025 birth records of 44 states. See the full state-by-state map on this page.
See how Killian ranks in other countries and regions.
#141 in Ireland (2025) · #175 in N. Ireland (2025) · #259 in Puerto Rico (2025) · #385 in Sweden (2025) · #441 in Scotland (2025) · #547 in Canada (2025) · #627 in England & Wales (2025) · #633 in Poland (2025) · #916 in Austria (2025) · #932 in Ecuador (2025) · #935 in Italy (2024) · #1,350 in Belgium (2025) and 3 more.
Among 71 notable people named Killian:
Sports figures appear 3.15× more often than among typical names — e.g. Killian Hayes, French-American basketball player (born 2001).
Together with its spelling variant Kilian (#1167), Killian would rank around #345 with about 950 births last year — the newborns split about 81/19 between Killian and Kilian.
Similar names: Cillian · Finnegan · Kylan · Callen · Cian · Zayden
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