Cosette is a distinctive girls' name in United States, ranking #1841 in 2014 with 110 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 205.6%. In 2014, approximately 1 in every 16,236 girls born was named Cosette. STABLE Recent data shows the name is currently stable.