Hannan is a distinctive girls' name in United States, ranking #7263 in 2005 with 16 recorded births. This places Hannan in the top 38% 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. Since 1996, the popularity has increased by 45.5%. In 2005, approximately 1 in every 115,481 girls born was named Hannan. FALLING Recent data shows the name is currently falling.