Jan is a moderately popular boys' name in England & Wales, ranking #326 in 2008 with 120 recorded births. The name reached its all-time peak in 2017 with 238 births ranking #226. Since 1996, the popularity has increased by 471.4%. In 2008, approximately 1 in every 2,828 boys born was named Jan. FALLING Recent data shows the name is currently falling.