Teaghan is a distinctive girls' name in United States, ranking #5920 in 2000 with 19 recorded births. The name reached its all-time peak in 2011 with 91 births ranking #2120. Since 1996, the popularity has increased by 280.0%. In 2000, approximately 1 in every 95,577 girls born was named Teaghan. FALLING Recent data shows the name is currently falling.