Tegan is a distinctive girls' name in United States, ranking #780 in 2011 with 350 recorded births. The name reached its all-time peak in 2011 with 350 births ranking #780. Since 1996, the popularity has increased by 386.1%. In 2011, approximately 1 in every 5,025 girls born was named Tegan. FALLING Recent data shows the name is currently falling.