Arnulfo is a distinctive boys' name in United States, ranking #1808 in 2006 with 76 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 27.6%. In 2006, approximately 1 in every 27,041 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.