Coi is a distinctive girls' name in United States, ranking #5422 in 2023 with 23 recorded births. This places Coi in the top 31% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2023 with 23 births ranking #5422. In 2023, approximately 1 in every 69,680 girls born was named Coi. FALLING Recent data shows the name is currently falling.