Gretta is a distinctive girls' name in United States, ranking #2946 in 2012 with 58 recorded births. This places Gretta in the top 15% 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 132.0%. In 2012, approximately 1 in every 30,358 girls born was named Gretta. FALLING Recent data shows the name is currently falling.