Joi is a distinctive girls' name in United States, ranking #2215 in 2009 with 89 recorded births. The name reached its all-time peak in 2001 with 119 births ranking #1564. Since 1996, the popularity has increased by 17.1%. In 2009, approximately 1 in every 20,639 girls born was named Joi. FALLING Recent data shows the name is currently falling.