Jan is a moderately popular boys' name in England & Wales, ranking #376 in 2007 with 97 recorded births. The name reached its all-time peak in 2017 with 238 births ranking #226. Since 1996, the popularity has increased by 361.9%. In 2007, approximately 1 in every 3,416 boys born was named Jan. FALLING Recent data shows the name is currently falling.