Chelsea is a moderately popular girls' name in England & Wales, ranking #111 in 2005 with 454 recorded births. The name reached its all-time peak in 1996 with 1,735 births ranking #34. Since 1996, the popularity has decreased by 73.8%. In 2005, approximately 1 in every 635 girls born was named Chelsea. STABLE Recent data shows the name is currently stable.