Arnulfo is a distinctive boys' name in United States, ranking #2776 in 2012 with 43 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 59.0%. In 2012, approximately 1 in every 44,108 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.