The baby name Sinead appears in baby name data for the United States from 1977 to 2011. It was most popular in 1991 with 115 babies given the name.
In the later years of this period, Sinead has become less common than it once was.
| Year | Count |
|---|---|
| 1977 | 10 |
| 1988 | 16 |
| 1989 | 36 |
| 1990 | 96 |
| 1991 | 115 |
| 1992 | 20 |
| 1993 | 13 |
| 1994 | 8 |
| 1995 | 14 |
| 1996 | 13 |
| 1997 | 38 |
| 1998 | 17 |
| 1999 | 7 |
| 2000 | 12 |
| 2001 | 5 |
| 2002 | 16 |
| 2003 | 7 |
| 2004 | 7 |
| 2005 | 6 |
| 2006 | 18 |
| 2007 | 5 |
| 2009 | 5 |
| 2010 | 5 |
| 2011 | 6 |