Teaghan is a distinctive girls' name in United States, ranking #8292 in 1997 with 11 recorded births. The name reached its all-time peak in 2011 with 91 births ranking #2120. Since 1996, the popularity has increased by 120.0%. In 1997, approximately 1 in every 158,242 girls born was named Teaghan. FALLING Recent data shows the name is currently falling.