Kou is a rare variant of Koa that was most common in the 1990s and has all but disappeared.
Kou is predominantly a boy name. It last appears in U.S. records in 2017. Kou was first reported in SSA data in 1979 and peaked in 1992 (48 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2017 | 5 | 5 | — | #13,397 |
| 2013 | 6 | 6 | — | #11,547 |
| 2011 | 9 | 9 | — | #8,479 |
| 2009 | 5 | 5 | — | #13,605 |
| 2007 | 5 | 5 | — | #13,518 |
| 2005 | 10 | 10 | — | #7,438 |
| 2004 | 8 | 8 | — | #8,595 |
| 2003 | 8 | 8 | — | #8,285 |
| 2002 | 10 | 10 | — | #6,826 |
| 2001 | 8 | 8 | — | #7,993 |
| 2000 | 9 | 9 | — | #7,153 |
| 1999 | 10 | 10 | — | #6,303 |
| 1998 | 13 | 13 | — | #5,054 |
| 1997 | 19 | — | — | #3,678 |
| 1996 | 22 | — | — | #3,258 |
| 1995 | 22 | — | — | #3,153 |
| 1994 | 30 | — | — | #2,539 |
| 1993 | 33 | — | — | #2,324 |
| 1992 | 53 | — | #14,418 | #1,766 |
| 1991 | 46 | — | #14,303 | #1,907 |
| 1990 | 46 | — | #14,126 | #1,893 |
| 1989 | 43 | — | — | #1,780 |
| 1988 | 38 | — | — | #1,805 |
| 1987 | 42 | — | #12,259 | #1,774 |
| 1986 | 34 | — | #10,176 | #2,081 |
| 1985 | 29 | — | — | #1,998 |
| 1984 | 32 | — | — | #1,780 |
| 1983 | 23 | — | — | #2,245 |
| 1982 | 31 | — | — | #1,835 |
| 1981 | 41 | — | #8,559 | #1,714 |
| 1980 | 28 | — | — | #1,986 |
| 1979 | 6 | — | — | #5,756 |