Meaning not yet researched.
Killian: US boys given the name each year, 1880 to 2025, from Social Security card applications. 770 in 2025. Its best rank was #248 in 2017.
US births per year · SSA card applications
Peaked at #248 in 2017; #418 in 2025. About 98% of babies named Killian in 2025 were boys.
Baby name · US data 1880–2025
#418 for US boys in 2025. Its best year was 2017, at #248.
Hover, tap or use the arrow keys for any year. Years with fewer than five babies of a sex are not published by SSA and show as zero.
Killian: US boys given the name each year from 1880 to 2025. 770 boys in 2025. Peak: #248 in 2017 · most boys in one year: 1,506 (2017).
In 2025, 770 US boys were named Killian, making it the 418th most common boys’ name of the year, down 48 places from #370 in 2024. That is 115 fewer than the 885 boys named Killian in 2024. Its best rank for boys was #248, reached in 2017. That year also had the most boys given the name: 1,506. For comparison, it was #350 in 2015 and unranked in 1950.
Social Security card records list Killian in 46 years of the 146 from 1880 to 2025, starting in 1915 with 5 babies. In all, 16,834 US babies have been given the name, 3.7% of them girls and 96% boys. Its busiest decade was the 2010s, with 8,062 babies named Killian.
Over the 10 years from 2016 to 2025, 10,486 US boys were named Killian; the busiest of those years was 2017, with 1,506. In 2025 that was about 1 in 2,218 of the boys in SSA’s list for the year.
Among the states, Killian ranked highest in Vermont in 2025, at #115 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Cillian (4,090 babies since 1880), Kylian (3,750 babies since 1880), Kellan (11,269 babies since 1880) and Kilian (2,717 babies since 1880). Rarer spellings such as Kelliann, Kyllian and Kilan are summarised on this page.
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Rare spellings summarised here: Kelliann (666), Kyllian (318), Kilan (138), Kielan (110), Kilyan (99), Killion (51), Kiylan (16), Killyan (11), Kilean (5), Keilian (5), Kielin (5).
Numbers are all-time US births. Links come from Wikidata’s “said to be the same as” (P460, CC0) and our spelling rule: at most two letters different, with the same sound pattern.
No nicknames listed for Killian in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
US boys. Rank within each state. SSA leaves out states where fewer than five boys got the name, so 11 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Vermont | 5 | #115 | — |
| South Dakota | 6 | #242 | — |
| West Virginia | 7 | #280 | #280 |
| Oklahoma | 17 | #286 | #403 |
| Oregon | 14 | #301 | #198 |
| Kentucky | 18 | #302 | #240 |
| Massachusetts | 19 | #303 | #337 |
| Michigan | 29 | #321 | #358 |
| Colorado | 20 | #323 | #328 |
| New Mexico | 6 | #341 | #301 |
| Nevada | 9 | #345 | #299 |
| North Carolina | 34 | #346 | #321 |
| Washington | 21 | #357 | #305 |
| Missouri | 18 | #358 | #342 |
| Ohio | 31 | #362 | #224 |
| Connecticut | 8 | #373 | #240 |
| Virginia | 22 | #373 | #308 |
| New York | 47 | #376 | #351 |
| South Carolina | 14 | #379 | #627 |
| Florida | 51 | #382 | #307 |
| Arizona | 20 | #385 | #352 |
| Utah | 12 | #395 | #352 |
| Indiana | 18 | #401 | #415 |
| Idaho | 6 | #403 | #279 |
| Pennsylvania | 26 | #407 | #259 |
| Nebraska | 6 | #408 | #370 |
| Tennessee | 19 | #424 | #365 |
| Illinois | 26 | #424 | #491 |
| Kansas | 8 | #451 | #373 |
| Wisconsin | 11 | #460 | #340 |
| Iowa | 7 | #469 | #286 |
| Maryland | 10 | #492 | #290 |
| Alabama | 10 | #503 | #356 |
| Georgia | 21 | #509 | #421 |
| Texas | 58 | #553 | #440 |
| California | 55 | #554 | #432 |
| New Jersey | 13 | #559 | #386 |
| Arkansas | 5 | #600 | #461 |
| Minnesota | 8 | #612 | #377 |
| Louisiana | 6 | #726 | #423 |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | 15 | #7,333 | 770 | #418 |
| 2024 | 12 | #8,716 | 885 | #370 |
| 2023 | 12 | #8,742 | 884 | #368 |
| 2022 | 20 | #6,109 | 903 | #364 |
| 2021 | 21 | #5,857 | 939 | #347 |
| 2020 | 13 | #8,202 | 899 | #352 |
| 2019 | 16 | #7,195 | 1,089 | #311 |
| 2018 | 21 | #5,910 | 1,229 | #287 |
| 2017 | 22 | #5,751 | 1,506 | #248 |
| 2016 | 19 | #6,554 | 1,382 | #264 |
| 2015 | 25 | #5,387 | 976 | #350 |
| 2014 | 16 | #7,494 | 545 | #511 |
| 2013 | 16 | #7,584 | 294 | #768 |
| 2012 | 11 | #10,091 | 270 | #819 |
| 2011 | 17 | #7,283 | 299 | #758 |
| 2010 | 16 | #7,729 | 293 | #766 |
| 2009 | 19 | #6,947 | 304 | #752 |
| 2008 | 16 | #7,939 | 274 | #800 |
| 2007 | 14 | #8,800 | 255 | #837 |
| 2006 | 12 | #9,624 | 176 | #1,036 |
| 2005 | 10 | #10,552 | 162 | #1,036 |
| 2004 | 15 | #7,633 | 151 | #1,066 |
| 2003 | 11 | #9,389 | 117 | #1,242 |
| 2002 | 13 | #8,067 | 117 | #1,199 |
| 2001 | 18 | #6,197 | 129 | #1,106 |
| 2000 | 19 | #5,827 | 139 | #1,043 |
| 1999 | 10 | #9,169 | 113 | #1,160 |
| 1998 | 21 | #5,043 | 137 | #1,000 |
| 1997 | 33 | #3,498 | 145 | #936 |
| 1996 | 16 | #5,927 | 145 | #911 |
| 1995 | 20 | #4,935 | 135 | #957 |
| 1994 | 12 | #7,363 | 94 | #1,186 |
| 1993 | 12 | #7,264 | 94 | #1,158 |
| 1992 | 22 | #4,615 | 71 | #1,345 |
| 1991 | 12 | #7,183 | 75 | #1,302 |
| 1990 | 10 | #8,200 | 81 | #1,221 |
| 1989 | 13 | #6,348 | 54 | #1,526 |
| 1988 | 8 | #8,795 | 22 | #2,654 |
| 1987 | — | — | 9 | #4,769 |
| 1986 | 7 | #9,025 | 13 | #3,555 |
| 1985 | — | — | 9 | #4,527 |
| 1984 | — | — | 7 | #5,297 |
| 1983 | — | — | 9 | #4,332 |
| 1982 | — | — | 9 | #4,425 |
| 1920 | — | — | 5 | #4,648 |
| 1915 | — | — | 5 | #4,120 |
About the data: counts are Social Security card applications for US births, for names given to at least five babies of a sex in a year (SSA, names.zip, public domain). Ranks follow SSA’s own order: most births first, ties alphabetical. Files retrieved 2026-10-05 (checksum on our sources page).