Cosette is a distinctive girls' name in United States, ranking #2133 in 2001 with 77 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 113.9%. In 2001, approximately 1 in every 23,384 girls born was named Cosette. STABLE Recent data shows the name is currently stable.