Alethia is a distinctive girls' name in United States, ranking #7520 in 2005 with 15 recorded births. The name reached its all-time peak in 2012 with 29 births ranking #4840. Since 1996, the popularity has increased by 15.4%. In 2005, approximately 1 in every 123,180 girls born was named Alethia. FALLING Recent data shows the name is currently falling.