Is Kolby a boy or girl name?
Kolby is mostly a boy name in the US. In 2024, 38 girls and 155 boys were named Kolby, so 19.7% were girls. Across 1880–2024, 10.2% of the 12,792 US babies named Kolby were girls.
- Boy rank, 2024
- #1,268
- Girl rank, 2024
- #3,916
- Babies named Kolby since 1968
- 12,792
- Most popular year
- 2001
- 781 babies
Boys and girls named Kolby, by decade
| Decade | Boys | Girls | Share girls |
|---|---|---|---|
| 1960s | 5 | 0 | 0% |
| 1970s | 154 | 13 | 7.8% |
| 1980s | 712 | 131 | 15.5% |
| 1990s | 2,531 | 339 | 11.8% |
| 2000s | 4,729 | 325 | 6.4% |
| 2010s | 2,551 | 341 | 11.8% |
| 2020s | 802 | 159 | 16.5% |
Every year
| Year | Boys | Boy rank | Girls | Girl rank |
|---|---|---|---|---|
| 2024 | 155 | #1,268 | 38 | #3,916 |
| 2023 | 167 | #1,198 | 46 | #3,454 |
| 2022 | 159 | #1,238 | 27 | #4,973 |
| 2021 | 151 | #1,263 | 25 | #5,169 |
| 2020 | 170 | #1,145 | 23 | #5,403 |
| 2019 | 153 | #1,237 | 25 | #5,234 |
| 2018 | 182 | #1,088 | 26 | #5,083 |
| 2017 | 166 | #1,146 | 35 | #4,182 |
| 2016 | 219 | #950 | 38 | #3,962 |
| 2015 | 272 | #828 | 35 | #4,192 |
| 2014 | 300 | #777 | 50 | #3,255 |
| 2013 | 304 | #749 | 47 | #3,384 |
| 2012 | 286 | #791 | 18 | #7,019 |
| 2011 | 325 | #705 | 35 | #4,194 |
| 2010 | 344 | #684 | 32 | #4,542 |
| 2009 | 371 | #662 | 31 | #4,749 |
| 2008 | 401 | #618 | 38 | #4,135 |
| 2007 | 378 | #643 | 23 | #6,004 |
| 2006 | 341 | #669 | 16 | #7,691 |
| 2005 | 387 | #586 | 17 | #7,009 |
| 2004 | 497 | #493 | 30 | #4,552 |
| 2003 | 543 | #464 | 29 | #4,476 |
| 2002 | 676 | #385 | 44 | #3,222 |
| 2001 | 739 | #359 | 42 | #3,283 |
| 2000 | 396 | #542 | 55 | #2,690 |
| 1999 | 407 | #521 | 52 | #2,689 |
| 1998 | 361 | #550 | 38 | #3,264 |
| 1997 | 274 | #629 | 27 | #4,074 |
| 1996 | 244 | #675 | 40 | #2,993 |
| 1995 | 267 | #634 | 33 | #3,395 |
| 1994 | 215 | #715 | 32 | #3,489 |
| 1993 | 191 | #756 | 32 | #3,468 |
| 1992 | 212 | #706 | 36 | #3,175 |
| 1991 | 205 | #708 | 23 | #4,412 |
| 1990 | 155 | #820 | 26 | #3,958 |
| 1989 | 119 | #935 | 28 | #3,613 |
| 1988 | 108 | #922 | 19 | #4,571 |
| 1987 | 106 | #917 | 17 | #4,773 |
| 1986 | 83 | #1,018 | 22 | #3,823 |
| 1985 | 90 | #965 | 20 | #4,057 |
| 1984 | 50 | #1,338 | 20 | #3,921 |
| 1983 | 51 | #1,302 | 5 | #11,113 |
| 1982 | 50 | #1,329 | 0 | – |
| 1981 | 20 | #2,455 | 0 | – |
| 1980 | 35 | #1,679 | 0 | – |
| 1979 | 24 | #2,131 | 7 | #8,490 |
| 1978 | 21 | #2,248 | 6 | #9,093 |
| 1977 | 19 | #2,415 | 0 | – |
| 1976 | 20 | #2,296 | 0 | – |
| 1975 | 18 | #2,406 | 0 | – |
| 1974 | 20 | #2,170 | 0 | – |
| 1973 | 15 | #2,563 | 0 | – |
| 1972 | 12 | #2,918 | 0 | – |
| 1971 | 5 | #5,314 | 0 | – |
| 1970 | 0 | – | 0 | – |
| 1969 | 0 | – | 0 | – |
| 1968 | 5 | #4,455 | 0 | – |
Highest rank
As a boy name, Kolby reached #359 in 2001. As a girl name, it reached #2,689 in 1999. Ranks count every name SSA published for that year and sex, so they go well past the top 1,000.
Names from the same era
These names were also most popular in the 2000s, with a similar number of babies. They can work as sibling or middle names that feel like they belong together.
Names spelled like Kolby
Source: US Social Security Administration baby name data, 1880–2024. Counts are Social Security card applications for US births; SSA leaves out names given to fewer than 5 babies in a year. Updated 2026-10-05. How these numbers are made.