Meaning and history
Killian is an anglicized form of Cillian and is also used in France.
20062006: 176 births, rank #1,036
2007: 255 births, rank #837
2008: 274 births, rank #799
2009: 304 births, rank #752
2010: 293 births, rank #764
20112011: 299 births, rank #757
2012: 270 births, rank #818
2013: 294 births, rank #767
2014: 545 births, rank #511
2015: 976 births, rank #349
20162016: 1,382 births, rank #264
2017: 1,506 births, rank #248
2018: 1,229 births, rank #287
2019: 1,089 births, rank #311
2020: 899 births, rank #352
20212021: 939 births, rank #347
2022: 903 births, rank #364
2023: 884 births, rank #367
2024: 885 births, rank #370
20252025: 770 births, rank #417
Killian moved from #370 to #418 for boys between 2024 and 2025. Its highest annual birth count came in 2017, with 1,506 births.