Chelsea is a moderately popular girls' name in United States, ranking #200 in 2005 with 1,734 recorded births. The name reached its all-time peak in 1996 with 5,864 births ranking #55. Since 1996, the popularity has decreased by 70.4%. In 2005, approximately 1 in every 1,066 girls born was named Chelsea. FALLING Recent data shows the name is currently falling.