Arnulfo is a distinctive boys' name in United States, ranking #2934 in 2014 with 39 recorded births. The name reached its all-time peak in 1996 with 105 births ranking #1127. Since 1996, the popularity has decreased by 62.9%. In 2014, approximately 1 in every 49,242 boys born was named Arnulfo. RISING Recent data shows the name is currently rising.