Cosette is a distinctive girls' name in United States, ranking #2422 in 2011 with 76 recorded births. The name reached its all-time peak in 2015 with 141 births ranking #1554. Since 1996, the popularity has increased by 111.1%. In 2011, approximately 1 in every 23,142 girls born was named Cosette. STABLE Recent data shows the name is currently stable.