Arnulfo is a distinctive boys' name in United States, ranking #3130 in 2017 with 37 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 64.8%. In 2017, approximately 1 in every 50,009 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.