Arnulfo is a distinctive boys' name in United States, ranking #3191 in 2013 with 34 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 67.6%. In 2013, approximately 1 in every 55,625 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.