Tegan is a distinctive girls' name in United States, ranking #1465 in 2005 with 145 recorded births. The name reached its all-time peak in 2011 with 350 births ranking #780. Since 1996, the popularity has increased by 101.4%. In 2005, approximately 1 in every 12,743 girls born was named Tegan. FALLING Recent data shows the name is currently falling.