Jan is a distinctive girls' name in United States, ranking #15898 in 2025 with 5 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #5377. Since 1996, the popularity has decreased by 72.2%. In 2025, approximately 1 in every 321,453 girls born was named Jan. STABLE Recent data shows the name is currently stable.