Hannan is a distinctive girls' name in United States, ranking #7435 in 1997 with 12 recorded births. This places Hannan in the top 46% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 25 births ranking #4412. In 1997, approximately 1 in every 145,055 girls born was named Hannan. FALLING Recent data shows the name is currently falling.