Jak is a moderately popular boys' name in England & Wales, ranking #241 in 1999 with 126 recorded births. The name reached its all-time peak in 2002 with 159 births ranking #212. Since 1996, the popularity has increased by 23.5%. In 1999, approximately 1 in every 2,407 boys born was named Jak. STABLE Recent data shows the name is currently stable.