Alethia is a distinctive girls' name in United States, ranking #4840 in 2012 with 29 recorded births. The name reached its all-time peak in 2012 with 29 births ranking #4840. Since 1996, the popularity has increased by 123.1%. In 2012, approximately 1 in every 60,715 girls born was named Alethia. FALLING Recent data shows the name is currently falling.