Arnulfo is a distinctive boys' name in United States, ranking #4869 in 2020 with 19 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 81.9%. In 2020, approximately 1 in every 90,793 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.