Ennis is a distinctive boys' name in United States, ranking #6195 in 2009 with 14 recorded births. The name reached its all-time peak in 1997 with 36 births ranking #2324. Since 1996, the popularity has increased by 180.0%. In 2009, approximately 1 in every 141,665 boys born was named Ennis. FALLING Recent data shows the name is currently falling.