Meaning not yet researched.
Kolby: US boys given the name each year, 1880 to 2025, from Social Security card applications. 165 in 2025. Its best rank was #359 in 2001.
US births per year · SSA card applications
Peaked at #359 in 2001; #1,225 in 2025. About 80% of babies named Kolby in 2025 were boys.
Baby name · US data 1880–2025
#1,225 for US boys in 2025. Its best year was 2001, at #359.
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.
Kolby: US boys and girls given the name each year from 1880 to 2025. 165 boys in 2025. Peak: #359 in 2001 · most boys in one year: 739 (2001).
In 2025, 165 US boys were named Kolby, making it the 1,225th most common boys’ name of the year, up 40 places from #1,265 in 2024. That is 9 more than the 156 boys named Kolby in 2024. Its best rank for boys was #359, reached in 2001. That year also had the most boys given the name: 739. For comparison, it was #828 in 2015 and unranked in 1950.
In 2025, 42 US girls were named Kolby, making it the 3,618th most common girls’ name of the year, up 312 places from #3,930 in 2024. That is 4 more than the 38 girls named Kolby in 2024. Its best rank for girls was #2,689, reached in 1999. The most girls given the name in a single year was 55, in 2000. For comparison, it was #4,192 in 2015 and unranked in 1950.
Social Security card records list Kolby in 56 years of the 146 from 1880 to 2025, starting in 1968 with 5 babies. In all, 13,001 US babies have been given the name, 10% of them girls and 90% boys. Its busiest decade was the 2000s, with 5,054 babies named Kolby.
Over the 10 years from 2016 to 2025, 1,688 US boys were named Kolby; the busiest of those years was 2016, with 219. In 2025 that was about 1 in 10,352 of the boys in SSA’s list for the year.
Among the states, Kolby ranked highest in Kentucky in 2025, at #551 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Colby (58,155 babies since 1880) and Kolbie (1,907 babies since 1880). Rarer spellings such as Kolbee 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.
Wikidata records this spelling as a given name in English. That is where the name is used, not necessarily where it comes from.
Rare spellings summarised here: Kolbee (155).
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 Kolby 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 37 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Kentucky | 8 | #551 | — |
| Missouri | 8 | #687 | #638 |
| Ohio | 10 | #836 | #1,310 |
| North Carolina | 8 | #980 | #799 |
| Arizona | 5 | #985 | #960 |
| Virginia | 6 | #1,033 | — |
| Georgia | 8 | #1,048 | #487 |
| Michigan | 5 | #1,200 | #852 |
| Illinois | 6 | #1,213 | — |
| Florida | 9 | #1,309 | #1,156 |
| Pennsylvania | 5 | #1,343 | #1,110 |
| Texas | 13 | #1,451 | #787 |
| California | 9 | #1,759 | #2,156 |
| New York | 5 | #1,916 | #1,123 |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | 42 | #3,618 | 165 | #1,225 |
| 2024 | 38 | #3,930 | 156 | #1,265 |
| 2023 | 46 | #3,456 | 167 | #1,199 |
| 2022 | 27 | #4,977 | 159 | #1,238 |
| 2021 | 25 | #5,171 | 151 | #1,263 |
| 2020 | 23 | #5,403 | 170 | #1,146 |
| 2019 | 25 | #5,235 | 153 | #1,237 |
| 2018 | 26 | #5,085 | 182 | #1,088 |
| 2017 | 35 | #4,186 | 166 | #1,146 |
| 2016 | 38 | #3,963 | 219 | #950 |
| 2015 | 35 | #4,192 | 272 | #828 |
| 2014 | 50 | #3,255 | 300 | #777 |
| 2013 | 47 | #3,385 | 304 | #749 |
| 2012 | 19 | #6,748 | 286 | #791 |
| 2011 | 35 | #4,195 | 325 | #705 |
| 2010 | 32 | #4,542 | 344 | #684 |
| 2009 | 31 | #4,749 | 371 | #662 |
| 2008 | 38 | #4,135 | 401 | #618 |
| 2007 | 23 | #6,004 | 378 | #643 |
| 2006 | 16 | #7,691 | 341 | #670 |
| 2005 | 17 | #7,009 | 387 | #586 |
| 2004 | 30 | #4,553 | 497 | #493 |
| 2003 | 29 | #4,476 | 543 | #464 |
| 2002 | 44 | #3,222 | 676 | #385 |
| 2001 | 42 | #3,283 | 739 | #359 |
| 2000 | 55 | #2,691 | 396 | #542 |
| 1999 | 52 | #2,689 | 407 | #521 |
| 1998 | 38 | #3,264 | 361 | #550 |
| 1997 | 27 | #4,074 | 274 | #629 |
| 1996 | 40 | #2,993 | 244 | #675 |
| 1995 | 33 | #3,395 | 267 | #634 |
| 1994 | 32 | #3,489 | 215 | #715 |
| 1993 | 32 | #3,468 | 191 | #756 |
| 1992 | 36 | #3,175 | 212 | #706 |
| 1991 | 23 | #4,412 | 205 | #708 |
| 1990 | 26 | #3,957 | 155 | #820 |
| 1989 | 28 | #3,613 | 119 | #935 |
| 1988 | 19 | #4,572 | 108 | #922 |
| 1987 | 17 | #4,774 | 106 | #917 |
| 1986 | 22 | #3,823 | 83 | #1,019 |
| 1985 | 20 | #4,058 | 90 | #965 |
| 1984 | 20 | #3,921 | 50 | #1,338 |
| 1983 | 5 | #11,114 | 51 | #1,303 |
| 1982 | — | — | 50 | #1,329 |
| 1981 | — | — | 20 | #2,455 |
| 1980 | — | — | 35 | #1,678 |
| 1979 | 7 | #8,489 | 24 | #2,131 |
| 1978 | 6 | #9,093 | 21 | #2,248 |
| 1977 | — | — | 19 | #2,415 |
| 1976 | — | — | 20 | #2,295 |
| 1975 | — | — | 18 | #2,406 |
| 1974 | — | — | 20 | #2,170 |
| 1973 | — | — | 15 | #2,563 |
| 1972 | — | — | 12 | #2,918 |
| 1971 | — | — | 5 | #5,313 |
| 1968 | — | — | 5 | #4,454 |
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).