Synthia is a distinctive girls' name in United States, ranking #4174 in 2000 with 30 recorded births. This places Synthia in the top 24% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 56 births ranking #2369. Since 1996, the popularity has decreased by 46.4%. In 2000, approximately 1 in every 60,532 girls born was named Synthia. STABLE Recent data shows the name is currently stable.