Caillou is a very rare boys' name that peaked in 2001 and has since faded.
Caillou is a boy name. It last appears in U.S. records in 2019. Caillou first appears in 2001 and peaked in 2001 (35 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2019 | 5 | 5 | #12,460 |
| 2017 | 5 | 5 | #12,585 |
| 2016 | 7 | 7 | #9,836 |
| 2015 | 10 | 10 | #7,575 |
| 2013 | 8 | 8 | #8,924 |
| 2012 | 14 | 14 | #6,043 |
| 2011 | 6 | 6 | #11,031 |
| 2010 | 13 | 13 | #6,402 |
| 2009 | 14 | 14 | #6,144 |
| 2008 | 18 | 18 | #5,092 |
| 2007 | 13 | 13 | #6,325 |
| 2006 | 19 | 19 | #4,703 |
| 2005 | 22 | 22 | #4,071 |
| 2004 | 16 | 16 | #5,045 |
| 2003 | 24 | 24 | #3,637 |
| 2002 | 23 | 23 | #3,683 |
| 2001 | 35 | 35 | #2,690 |