Erna is a distinctive girls' name in United States, ranking #14012 in 2021 with 6 recorded births. The name reached its all-time peak in 2001 with 14 births ranking #7438. Since 1996, the popularity has increased by 20.0%. In 2021, approximately 1 in every 273,285 girls born was named Erna. STABLE Recent data shows the name is currently stable.