Phi is a distinctive boys' name in United States, ranking #4190 in 1997 with 16 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3788. Since 1996, the popularity has decreased by 11.1%. In 1997, approximately 1 in every 117,818 boys born was named Phi. RISING Recent data shows the name is currently rising.