Cosette is a distinctive girls' name in United States, ranking #1957 in 2021 with 100 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 177.8%. In 2021, approximately 1 in every 16,397 girls born was named Cosette. STABLE Recent data shows the name is currently stable.