Jan is a distinctive girls' name in United States, ranking #10435 in 2005 with 10 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #5377. Since 1996, the popularity has decreased by 44.4%. In 2005, approximately 1 in every 184,770 girls born was named Jan. STABLE Recent data shows the name is currently stable.