Jac is a moderately popular boys' name in England & Wales, ranking #369 in 1996 with 60 recorded births. This places Jac in the top 10% 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. In 1996, approximately 1 in every 5,309 boys born was named Jac. STABLE Recent data shows the name is currently stable.