Chelsea is a moderately popular girls' name in England & Wales, ranking #336 in 2011 with 143 recorded births. The name reached its all-time peak in 1996 with 1,735 births ranking #34. Since 1996, the popularity has decreased by 91.8%. In 2011, approximately 1 in every 2,247 girls born was named Chelsea. STABLE Recent data shows the name is currently stable.