Koby is an uncommon variant of Kobe that peaked in 2000 and has since faded.
Koby is predominantly a boy name. In 2025 it ranked #2,174 for boy births in the United States (and #4,655 across all names), given to 66 babies. Koby first appears in 1958 and peaked in 2000 (411 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 66 | 66 | — | #2,174 |
| 2024 | 78 | 78 | #16,566 | #2,070 |
| 2023 | 72 | 72 | #12,842 | #2,208 |
| 2022 | 87 | 87 | #16,602 | #1,914 |
| 2021 | 91 | 91 | #14,435 | #1,830 |
| 2020 | 109 | 109 | #12,864 | #1,596 |
| 2019 | 85 | 85 | — | #1,810 |
| 2018 | 98 | 98 | #16,985 | #1,694 |
| 2017 | 97 | 97 | — | #1,638 |
| 2016 | 106 | 106 | #13,668 | #1,625 |
| 2015 | 109 | 109 | — | #1,519 |
| 2014 | 91 | 91 | — | #1,687 |
| 2013 | 114 | 114 | — | #1,453 |
| 2012 | 105 | 105 | — | #1,529 |
| 2011 | 130 | 130 | — | #1,313 |
| 2010 | 137 | 137 | — | #1,273 |
| 2009 | 155 | 155 | — | #1,171 |
| 2008 | 187 | 187 | #14,645 | #1,057 |
| 2007 | 178 | 178 | — | #1,057 |
| 2006 | 165 | 165 | — | #1,078 |
| 2005 | 162 | 162 | — | #1,037 |
| 2004 | 197 | 197 | — | #881 |
| 2003 | 335 | 335 | #17,143 | #623 |
| 2002 | 384 | 384 | #12,963 | #579 |
| 2001 | 415 | 415 | #11,557 | #537 |
| 2000 | 419 | 419 | #11,299 | #533 |
| 1999 | 363 | 363 | #15,712 | #560 |
| 1998 | 320 | 320 | — | #592 |
| 1997 | 196 | — | — | #760 |
| 1996 | 116 | — | — | #1,054 |
| 1995 | 83 | — | — | #1,292 |
| 1994 | 68 | — | — | #1,429 |
| 1993 | 69 | — | — | #1,401 |
| 1992 | 66 | — | — | #1,409 |
| 1991 | 71 | — | — | #1,345 |
| 1990 | 65 | — | — | #1,391 |
| 1989 | 54 | — | — | #1,527 |
| 1988 | 51 | — | — | #1,492 |
| 1987 | 52 | — | #12,255 | #1,518 |
| 1986 | 21 | — | — | #2,569 |
| 1985 | 35 | — | — | #1,747 |
| 1984 | 20 | — | — | #2,494 |
| 1983 | 17 | — | — | #2,740 |
| 1982 | 10 | — | — | #4,104 |
| 1981 | 11 | — | — | #3,743 |
| 1980 | 20 | — | — | #2,491 |
| 1979 | 27 | — | #11,017 | #2,282 |
| 1978 | 17 | — | — | #2,615 |
| 1977 | 13 | — | — | #3,125 |
| 1976 | 27 | — | #10,029 | #2,146 |
| 1975 | 22 | — | — | #2,094 |
| 1974 | 23 | — | — | #1,958 |
| 1973 | 16 | — | — | #2,454 |
| 1972 | 12 | — | — | #2,917 |
| 1971 | 20 | — | — | #2,088 |
| 1970 | 12 | — | — | #2,805 |
| 1969 | 9 | — | — | #3,204 |
| 1968 | 7 | — | — | #3,527 |
| 1966 | 5 | — | — | #4,267 |
| 1965 | 11 | — | — | #2,555 |
| 1963 | 6 | — | — | #3,842 |
| 1962 | 11 | — | — | #2,593 |
| 1961 | 5 | — | — | #4,383 |
| 1959 | 5 | — | — | #4,300 |
| 1958 | 7 | — | — | #3,438 |