Reiley is a rare variant of Reilly that peaked in 2007 and has since faded.
Reiley is predominantly a girl name. It last appears in U.S. records in 2023. Reiley first appears in 1991 and peaked in 1998 (37 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2023 | 10 | 10 | #17,087 | #13,724 |
| 2021 | 15 | 15 | #10,965 | #11,830 |
| 2020 | 16 | 16 | #9,412 | #13,614 |
| 2019 | 11 | 11 | #9,613 | — |
| 2018 | 15 | 15 | #7,685 | — |
| 2017 | 13 | 13 | #8,683 | — |
| 2016 | 17 | 17 | #9,311 | #13,747 |
| 2015 | 12 | 12 | #9,371 | — |
| 2014 | 25 | 25 | #6,934 | #10,478 |
| 2013 | 22 | 22 | #8,944 | #8,618 |
| 2012 | 21 | 21 | #10,282 | #8,005 |
| 2011 | 36 | 36 | #5,508 | #7,392 |
| 2010 | 28 | 28 | #7,154 | #8,006 |
| 2009 | 56 | 56 | #4,785 | #4,134 |
| 2008 | 40 | 40 | #6,098 | #5,435 |
| 2007 | 58 | 58 | #4,547 | #4,095 |
| 2006 | 49 | 49 | #5,671 | #3,970 |
| 2005 | 48 | 48 | #5,224 | #4,030 |
| 2004 | 42 | 42 | #4,918 | #5,432 |
| 2003 | 54 | 54 | #3,860 | #4,575 |
| 2002 | 53 | 53 | #4,154 | #3,887 |
| 2001 | 39 | 39 | #4,418 | #6,349 |
| 2000 | 47 | 47 | #4,268 | #4,341 |
| 1999 | 43 | 43 | #3,869 | #5,581 |
| 1998 | 54 | 54 | #3,341 | #4,157 |
| 1997 | 48 | — | #3,284 | #5,202 |
| 1996 | 28 | — | #4,845 | #7,790 |
| 1995 | 11 | — | #7,943 | — |
| 1994 | 19 | — | #8,632 | #6,241 |
| 1992 | 7 | — | #11,404 | — |
| 1991 | 5 | — | #14,832 | — |