Sinead is a distinctive girls' name in United States, ranking #7379 in 2011 with 17 recorded births. The name reached its all-time peak in 1997 with 44 births ranking #2817. Since 1996, the popularity has decreased by 55.3%. In 2011, approximately 1 in every 103,459 girls born was named Sinead. STABLE Recent data shows the name is currently stable.