Lydia is a popular girls' name in United States, ranking #89 in 2021 with 2,931 recorded births. The name reached its all-time peak in 2014 with 3,652 births ranking #84. Since 1996, the popularity has increased by 61.7%. In 2021, approximately 1 in every 559 girls born was named Lydia. STABLE Recent data shows the name is currently stable.