Erna is a distinctive girls' name in United States, ranking #11562 in 2010 with 9 recorded births. The name reached its all-time peak in 2001 with 14 births ranking #7438. Since 1996, the popularity has increased by 80.0%. In 2010, approximately 1 in every 197,481 girls born was named Erna. STABLE Recent data shows the name is currently stable.