Cosette is a distinctive girls' name in United States, ranking #2035 in 2019 with 94 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 161.1%. In 2019, approximately 1 in every 17,847 girls born was named Cosette. STABLE Recent data shows the name is currently stable.