Jan is a distinctive boys' name in United States, ranking #1198 in 1999 with 107 recorded births. This places Jan in the top 10% 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 279 births ranking #758. In 1999, approximately 1 in every 17,945 boys born was named Jan. FALLING Recent data shows the name is currently falling.