Chelsea is a moderately popular girls' name in United States, ranking #223 in 2010 with 1,417 recorded births. The name reached its all-time peak in 1996 with 5,864 births ranking #55. Since 1996, the popularity has decreased by 75.8%. In 2010, approximately 1 in every 1,254 girls born was named Chelsea. FALLING Recent data shows the name is currently falling.