Kacper is a rare boys' name that peaked in 2007 and has since faded.
Kacper is a boy name. In 2025 it ranked #7,412 for boy births in the United States (and #15,550 across all names), given to 11 babies. Kacper first appears in 1994 and peaked in 2007 (88 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 11 | 11 | #7,412 |
| 2024 | 17 | 17 | #5,550 |
| 2023 | 12 | 12 | #7,095 |
| 2022 | 14 | 14 | #6,309 |
| 2021 | 11 | 11 | #7,348 |
| 2020 | 11 | 11 | #7,250 |
| 2019 | 23 | 23 | #4,409 |
| 2018 | 32 | 32 | #3,477 |
| 2017 | 19 | 19 | #5,019 |
| 2016 | 45 | 45 | #2,705 |
| 2015 | 30 | 30 | #3,633 |
| 2014 | 43 | 43 | #2,777 |
| 2013 | 36 | 36 | #3,093 |
| 2012 | 62 | 62 | #2,167 |
| 2011 | 54 | 54 | #2,360 |
| 2010 | 56 | 56 | #2,302 |
| 2009 | 57 | 57 | #2,308 |
| 2008 | 76 | 76 | #1,909 |
| 2007 | 88 | 88 | #1,714 |
| 2006 | 87 | 87 | #1,651 |
| 2005 | 65 | 65 | #1,952 |
| 2004 | 65 | 65 | #1,899 |
| 2003 | 42 | 42 | #2,488 |
| 2002 | 23 | 23 | #3,725 |
| 2001 | 29 | 29 | #3,104 |
| 2000 | 31 | 31 | #2,891 |
| 1999 | 13 | 13 | #5,174 |
| 1998 | 13 | 13 | #5,023 |
| 1997 | 7 | — | #7,688 |
| 1996 | 9 | — | #6,247 |
| 1995 | 11 | — | #5,319 |
| 1994 | 10 | — | #5,665 |