Cosette is a distinctive girls' name in United States, ranking #3385 in 2008 with 49 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 36.1%. In 2008, approximately 1 in every 38,586 girls born was named Cosette. STABLE Recent data shows the name is currently stable.