Fiona is a moderately popular girls' name in United States, ranking #470 in 2025 with 654 recorded births. The name reached its all-time peak in 2017 with 1,683 births ranking #180. Since 1996, the popularity has increased by 74.4%. In 2025, approximately 1 in every 2,458 girls born was named Fiona. FALLING Recent data shows the name is currently falling.