Zi is a distinctive boys' name in United States, ranking #13217 in 2004 with 5 recorded births. This places Zi in the bottom 1% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 10 births ranking #7050. In 2004, approximately 1 in every 396,960 boys born was named Zi. FALLING Recent data shows the name is currently falling.