Hannan is a distinctive boys' name in United States, ranking #8785 in 2002 with 7 recorded births. This places Hannan in the bottom 30% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 11 births ranking #7379. In 2002, approximately 1 in every 277,353 boys born was named Hannan. FALLING Recent data shows the name is currently falling.