Jac is a moderately popular boys' name in England & Wales, ranking #379 in 2015 with 115 recorded births. This places Jac in the top 6% 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 91.7%. In 2015, approximately 1 in every 2,898 boys born was named Jac. STABLE Recent data shows the name is currently stable.