Siobhan is a distinctive girls' name in United States, ranking #1931 in 2024 with 103 recorded births. The name reached its all-time peak in 1997 with 139 births ranking #1272. Since 1996, the popularity has decreased by 25.4%. In 2024, approximately 1 in every 15,662 girls born was named Siobhan. FALLING Recent data shows the name is currently falling.