Sinead is a distinctive girls' name in United States, ranking #3007 in 1998 with 43 recorded births. The name reached its all-time peak in 1997 with 44 births ranking #2817. Since 1996, the popularity has increased by 13.2%. In 1998, approximately 1 in every 41,090 girls born was named Sinead. STABLE Recent data shows the name is currently stable.