Arnulfo is a distinctive boys' name in United States, ranking #1497 in 2003 with 86 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 18.1%. In 2003, approximately 1 in every 22,968 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.