Cosette is a distinctive girls' name in United States, ranking #3130 in 1998 with 40 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 11.1%. In 1998, approximately 1 in every 44,172 girls born was named Cosette. STABLE Recent data shows the name is currently stable.