Gretta is a distinctive girls' name in United States, ranking #4117 in 2008 with 38 recorded births. This places Gretta in the top 20% 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 52.0%. In 2008, approximately 1 in every 49,756 girls born was named Gretta. FALLING Recent data shows the name is currently falling.