Hannan is a distinctive girls' name in United States, ranking #4412 in 1998 with 25 recorded births. The name reached its all-time peak in 1998 with 25 births ranking #4412. Since 1996, the popularity has increased by 127.3%. In 1998, approximately 1 in every 70,676 girls born was named Hannan. FALLING Recent data shows the name is currently falling.