Koa is an uncommon boys' name that has climbed to its highest level yet, peaking in 2025.
Koa is predominantly a boy name. In 2025 it ranked #269 among boys (1,281) and #1,588 among girls (132) — overall #477 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 1,413 | 1,413 | #1,588 | #269 |
| 2024 | 1,288 | 1,293 | #1,566 | #292 |
| 2023 | 1,238 | 1,238 | #1,732 | #298 |
| 2022 | 1,062 | 1,062 | #1,726 | #350 |
| 2021 | 595 | 595 | #2,869 | #546 |
| 2020 | 532 | 532 | #2,949 | #582 |
| 2019 | 368 | 368 | #3,645 | #741 |
| 2018 | 295 | 295 | #6,959 | #811 |
| 2017 | 245 | 245 | #5,752 | #938 |
| 2016 | 161 | 161 | #12,364 | #1,227 |
| 2015 | 173 | 173 | #9,839 | #1,158 |
| 2014 | 125 | 125 | #8,739 | #1,461 |
| 2013 | 124 | 124 | #9,947 | #1,463 |
| 2012 | 128 | 128 | #10,883 | #1,413 |
| 2011 | 95 | 95 | #14,117 | #1,697 |
| 2010 | 83 | 83 | #12,916 | #1,907 |
| 2009 | 95 | 95 | #8,685 | #1,836 |
| 2008 | 84 | 84 | #14,644 | #1,889 |
| 2007 | 62 | 62 | #16,611 | #2,324 |
| 2006 | 47 | 47 | #16,200 | #2,811 |
| 2005 | 48 | 48 | #15,523 | #2,640 |
| 2004 | 39 | 39 | — | #2,725 |
| 2003 | 29 | 29 | — | #3,242 |
| 2002 | 33 | 33 | — | #2,856 |
| 2001 | 17 | 17 | — | #4,597 |
| 2000 | 27 | 27 | #9,554 | #4,491 |
| 1999 | 22 | 22 | — | #3,537 |
| 1998 | 10 | 10 | — | #6,100 |
| 1997 | 12 | — | — | #5,134 |
| 1996 | 17 | — | — | #3,938 |
| 1995 | 13 | — | — | #4,672 |
| 1994 | 7 | — | — | #7,406 |
| 1993 | 8 | — | — | #6,573 |
| 1992 | 7 | — | — | #7,085 |
| 1984 | 8 | — | #7,753 | — |
| 1982 | 8 | — | #7,825 | — |
| 1981 | 6 | — | — | #5,907 |
| 1980 | 12 | — | #11,225 | #5,250 |
| 1979 | 5 | — | #11,015 | — |
| 1978 | 7 | — | — | #4,812 |