Chelsea is a moderately popular girls' name in United States, ranking #122 in 1999 with 2,725 recorded births. The name reached its all-time peak in 1996 with 5,864 births ranking #55. Since 1996, the popularity has decreased by 53.5%. In 1999, approximately 1 in every 651 girls born was named Chelsea. FALLING Recent data shows the name is currently falling.