Chelsea is a moderately popular girls' name in United States, ranking #140 in 2000 with 2,380 recorded births. The name reached its all-time peak in 1996 with 5,864 births ranking #55. Since 1996, the popularity has decreased by 59.4%. In 2000, approximately 1 in every 763 girls born was named Chelsea. FALLING Recent data shows the name is currently falling.