Ennis is a distinctive boys' name in United States, ranking #7243 in 2007 with 11 recorded births. The name reached its all-time peak in 1997 with 36 births ranking #2324. Since 1996, the popularity has increased by 120.0%. In 2007, approximately 1 in every 188,658 boys born was named Ennis. FALLING Recent data shows the name is currently falling.