Cosette is a distinctive girls' name in United States, ranking #2672 in 2006 with 67 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 86.1%. In 2006, approximately 1 in every 28,374 girls born was named Cosette. STABLE Recent data shows the name is currently stable.