Jac is a moderately popular boys' name in England & Wales, ranking #353 in 1997 with 67 recorded births. This places Jac in the top 9% of ranked UK boys' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2004 with 134 births ranking #246. Since 1996, the popularity has increased by 11.7%. In 1997, approximately 1 in every 4,693 boys born was named Jac. STABLE Recent data shows the name is currently stable.