Gretta is a distinctive girls' name in United States, ranking #3294 in 2000 with 41 recorded births. This places Gretta in the top 19% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2010 with 70 births ranking #2594. Since 1996, the popularity has increased by 64.0%. In 2000, approximately 1 in every 44,292 girls born was named Gretta. FALLING Recent data shows the name is currently falling.