Arnulfo is a distinctive boys' name in United States, ranking #3802 in 2019 with 28 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 73.3%. In 2019, approximately 1 in every 64,049 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.