Teaghan is a distinctive girls' name in United States, ranking #2404 in 2010 with 79 recorded births. The name reached its all-time peak in 2011 with 91 births ranking #2120. Since 1996, the popularity has increased by 1,480.0%. In 2010, approximately 1 in every 22,498 girls born was named Teaghan. FALLING Recent data shows the name is currently falling.