Cosette is a distinctive girls' name in United States, ranking #1735 in 2016 with 120 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 233.3%. In 2016, approximately 1 in every 14,762 girls born was named Cosette. STABLE Recent data shows the name is currently stable.