Chelsea is a moderately popular girls' name in United States, ranking #222 in 2011 with 1,425 recorded births. The name reached its all-time peak in 1996 with 5,864 births ranking #55. Since 1996, the popularity has decreased by 75.7%. In 2011, approximately 1 in every 1,234 girls born was named Chelsea. FALLING Recent data shows the name is currently falling.