Arnulfo is a distinctive boys' name in United States, ranking #4365 in 2018 with 23 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 78.1%. In 2018, approximately 1 in every 78,934 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.