Ennis is a distinctive boys' name in United States, ranking #5878 in 2017 with 15 recorded births. The name reached its all-time peak in 1997 with 36 births ranking #2324. Since 1996, the popularity has increased by 200.0%. In 2017, approximately 1 in every 123,354 boys born was named Ennis. FALLING Recent data shows the name is currently falling.