Jaan is a distinctive boys' name in United States, ranking #9510 in 2005 with 7 recorded births. This places Jaan in the bottom 29% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 12 births ranking #6627. In 2005, approximately 1 in every 285,307 boys born was named Jaan. FALLING Recent data shows the name is currently falling.